Showing off its crimes: How ISIS flaunts its brutality as propagandaBy Holly Yan, CNNUpdated 7:18 PM ET, Thu September 4, 2014Just WatchedISIS using video as a weaponreplayMore Videos ...ISIS using video as a weapon 06:32Story highlightsISIS militants are getting increasingly tech- and media savvySome of their videos rival Hollywood features in production qualityBeheadings by ISIS have increased after al Qaeda disowned the group"Our knife will continue to strike the necks of your people," a militant warns ObamaOne video shows more than 100 prisoners paraded across the desert in their underwear, then lying face down as militants unleash a hailstorm of bullets into their bodies. Other images show crucifixions and public executions in towns overrun by terrorists.And recent footage showing the beheading of a second American journalist proves that ISIS wants the world to know how brutal it can be.The insurgents are experts at using footage of their crimes as propaganda to terrify those who disagree with their radicalism and to threaten foreign leaders. The visuals are as much a part of ISIS' terrorism as its bloody march across the Iraq and Syria. In the video of American Steven Sotloff's decapitation, the executioner has a stern warning for the U.S. President:Just WatchedDo ISIS' videos mirror 'Homeland'?replayMore Videos ...Do ISIS' videos mirror 'Homeland'? 02:46PLAY VIDEOJust WatchedIs U.S. citizen ISIS' social media guru?replayMore Videos ...Is U.S. citizen ISIS' social media guru? 02:02PLAY VIDEOJust WatchedISIS and religious justificationreplayMore Videos ...ISIS and religious justification 03:41PLAY VIDEO"I'm back, Obama, and I'm back because of your arrogant foreign policy towards the Islamic State," the man says in the video, released just days after fellow journalist James Foley was beheaded. "Just as your missiles continue to strike our people, our knife will continue to strike the necks of your people."Even a 7-year-old child was photographed holding a severed head. The picture was reportedly taken in Raqqa, the ISIS stronghold in Syria, where the boy's Australian father had taken his family to join the fight.More decapitationsPublicized beheadings had actually stopped in years pastA decade ago, al Qaeda -- the terror group that spawned ISIS -- made headlines with a series of decapitations, including those of Americans Nicholas Berg and Eugene "Jack" Armstrong. Top al Qaeda official Ayman al-Zawahiri criticized the gruesome antics, and the decapitations stopped. But al Qaeda has since disowned ISIS, and al-Zawahiri has not condemned Foley's execution.That means the beheadings could continue. But it's not just Western captives who fall victim. Last week, a Kurdish man was executed in front of a mosque in Mosul in a video called "A message written in blood," notes Charlie Cooper, Middle East researcher at the Quilliam Foundation.But because that message "was directed at the President of Iraqi Kurdistan, this particular piece of propaganda did not receive widespread coverage in the international media," Cooper wrote in a piece for CNN.com. "They have shown their willingness to kill anyone in their path -- not just Americans, not just Westerners, but Iraqis of all faiths, of all sects," U.S. State Department spokeswoman Marie Harf said. "They've shown their complete barbarism in doing that." Just WatchedISIS profiting from seized oilreplayMore Videos ...ISIS profiting from seized oil 02:21PLAY VIDEOJust WatchedBritish PM weighs in on ISISreplayMore Videos ...British PM weighs in on ISIS 05:35PLAY VIDEOThe ISIS terror threat 50 photosThe ISIS terror threat 50 photosIraqi army and volunteer fighters prepare in the Sedull Udeyim region of Iraq on Sunday, March 1, before an operation against ISIS in Tikrit, Iraq.Hide Caption 1 of 50The ISIS terror threat 50 photosDisplaced Assyrian women who fled their homes due to ISIS attacks pray at the Ibrahim Al-Khalil Melkite Greek Catholic Church on the outskirts of Damascus, Syria, on March 1. ISIS militants recently abducted at least 220 Assyrians in Syria. Hide Caption 2 of 50The ISIS terror threat 50 photosMembers of the Iraqi security forces leave Samarra, Iraq, north of Baghdad, on Saturday, February 28, to drive toward Tikrit to launch an assault against ISIS. Hide Caption 3 of 50The ISIS terror threat 50 photosA woman looks at her destroyed home after returning to the village of Al-Mansuriya, Iraq, on Saturday, February 14.Hide Caption 4 of 50The ISIS terror threat 50 photosSafi al-Kasasbeh, right, receives condolences from tribal leaders at his home village near Karak, Jordan, on Wednesday, February 4. Al-Kasasbeh's son, Jordanian pilot Moath al-Kasasbeh, was burned alive in a video that was recently released by ISIS militants. Jordan is one of a handful of Middle Eastern nations taking part in the U.S.-led military coalition against ISIS.Hide Caption 5 of 50The ISIS terror threat 50 photosA Kurdish marksman looks over a destroyed area of Kobani, Syria, on Friday, January 30, after the city had been liberated from the ISIS militant group. Kobani, also known as Ayn al-Arab, had been under assault by ISIS since mid-September.Hide Caption 6 of 50The ISIS terror threat 50 photosSmoke billows in Kirkuk, Iraq, as Kurdish Peshmerga fighters take position against ISIS militants on January 30. The aim of ISIS is to create an Islamic state across Sunni areas of Iraq and in Syria.Hide Caption 7 of 50The ISIS terror threat 50 photosKurdish people celebrate in Suruc, Turkey, near the Turkish-Syrian border, after ISIS militants were expelled from Kobani on Tuesday, January 27.Hide Caption 8 of 50The ISIS terror threat 50 photosCollapsed buildings are seen in Kobani on January 27 after Kurdish forces took control of the town from ISIS.Hide Caption 9 of 50The ISIS terror threat 50 photosJunko Ishido, mother of Japanese journalist Kenji Goto, reacts during a news conference in Tokyo on Friday, January 23. ISIS would later kill Goto and another Japanese hostage, Haruna Yukawa.Hide Caption 10 of 50The ISIS terror threat 50 photosISIS militants are seen through a rifle's scope during clashes with Peshmerga fighters in Mosul, Iraq, on Wednesday, January 21.Hide Caption 11 of 50The ISIS terror threat 50 photosAn elderly Yazidi man arrives in Kirkuk after being released by ISIS on Saturday, January 17. The militant group released about 200 Yazidis who were held captive for five months in Iraq. Almost all of the freed prisoners were in poor health and bore signs of abuse and neglect, Kurdish officials said.Hide Caption 12 of 50The ISIS terror threat 50 photosSmoke billows behind an ISIS sign during an Iraqi military operation to regain control of the town of Sadiyah, about 95 kilometers (60 miles) north of Baghdad, on Tuesday, November 25.Hide Caption 13 of 50The ISIS terror threat 50 photosFighters from the Free Syrian Army and the Kurdish People's Protection Units join forces to fight ISIS in Kobani on Wednesday, November 19.Hide Caption 14 of 50The ISIS terror threat 50 photosA picture taken from Turkey shows smoke rising after ISIS militants fired mortar shells toward an area controlled by Syrian Kurdish fighters near Kobani on Monday, November 3.Hide Caption 15 of 50The ISIS terror threat 50 photosIraqi special forces search a house in Jurf al-Sakhar, Iraq, on Thursday, October 30, after retaking the area from ISIS.Hide Caption 16 of 50The ISIS terror threat 50 photosISIS militants stand near the site of an airstrike near the Turkey-Syria border on Thursday, October 23. The United States and several Arab nations have been bombing ISIS targets in Syria to take out the militant group's ability to command, train and resupply its fighters.Hide Caption 17 of 50The ISIS terror threat 50 photosKurdish fighters walk to positions as they combat ISIS forces in Kobani on Sunday, October 19.Hide Caption 18 of 50The ISIS terror threat 50 photosA U.S. Air Force plane flies above Kobani on Saturday, October 18. Hide Caption 19 of 50The ISIS terror threat 50 photosHeavy smoke rises in Kobani following an airstrike by the U.S.-led coalition on October 18.Hide Caption 20 of 50The ISIS terror threat 50 photosCundi Minaz, a female Kurdish fighter, is buried in a cemetery in the southeastern Turkish town of Suruc on Tuesday, October 14. Minaz was reportedly killed during clashes with ISIS militants in nearby Kobani.Hide Caption 21 of 50The ISIS terror threat 50 photosTurkish police officers secure a basketball stadium in Suruc on October 14. Some Syrian Kurds were held there after crossing from Syria into Turkey. Tens of thousands of people fled Kobani to escape ISIS.Hide Caption 22 of 50The ISIS terror threat 50 photosKiymet Ergun, a Syrian Kurd, celebrates in Mursitpinar, Turkey, after an airstrike by the U.S.-led coalition in Kobani on Monday, October 13.Hide Caption 23 of 50The ISIS terror threat 50 photosAlleged ISIS militants stand next to an ISIS flag atop a hill in Kobani on Monday, October 6. Hide Caption 24 of 50The ISIS terror threat 50 photosIn this photo released by the U.S. Air Force on Saturday, October 4, a U.S. Navy jet is refueled in Iraqi airspace after conducting an airstrike against ISIS militants.Hide Caption 25 of 50The ISIS terror threat 50 photosA Kurdish Peshmerga soldier who was wounded in a battle with ISIS is wheeled to the Zakho Emergency Hospital in Duhuk, Iraq, on Tuesday, September 30.Hide Caption 26 of 50The ISIS terror threat 50 photosSyrian Kurds wait near a border crossing in Suruc as they wait to return to their homes in Kobani on Sunday, September 28.Hide Caption 27 of 50The ISIS terror threat 50 photosTomahawk missiles, intended for ISIS targets in Syria, fly above the Persian Gulf after being fired by the USS Philippine Sea in this image released by the U.S. Navy on Tuesday, September 23.Hide Caption 28 of 50The ISIS terror threat 50 photosTurkish Kurds clash with Turkish security forces during a protest near Suruc on Monday, September 22. According to Time magazine, the protests were over Turkey's temporary decision to close the border with Syria.Hide Caption 29 of 50The ISIS terror threat 50 photosSyrian Kurds fleeing ISIS militants wait behind a fence in Suruc on Sunday, September 21.Hide Caption 30 of 50The ISIS terror threat 50 photosA elderly man is carried after crossing the Syria-Turkey border near Suruc on Saturday, September 20.Hide Caption 31 of 50The ISIS terror threat 50 photosA Kurdish Peshmerga fighter launches mortar shells toward ISIS militants in Zumar, Iraq, on Monday, September 15.Hide Caption 32 of 50The ISIS terror threat 50 photosKurdish Peshmerga fighters fire at ISIS militant positions from their position on the top of Mount Zardak, east of Mosul, Iraq, on Tuesday, September 9. Hide Caption 33 of 50The ISIS terror threat 50 photosIraqi volunteer fighters celebrate breaking the Amerli siege on Monday, September 1. ISIS militants had surrounded Amerli, 70 miles north of Baquba, Iraq, since mid-June.Hide Caption 34 of 50The ISIS terror threat 50 photosKurdish Peshmerga forces stand guard at their position in the Omar Khaled village west of Mosul on Sunday, August 24. Hide Caption 35 of 50The ISIS terror threat 50 photosKurdish Peshmergas fight to regain control of the town of Celavle, in Iraq's Diyala province, on August 24.Hide Caption 36 of 50The ISIS terror threat 50 photosPeshmerga fighters stand guard at Mosul Dam in northern Iraq on Thursday, August 21. With the help of U.S. military airstrikes, Kurdish and Iraqi forces retook the dam from ISIS militants on August 18. A breach of the dam would have been catastrophic for millions of Iraqis who live downstream from it.Hide Caption 37 of 50The ISIS terror threat 50 photosDisplaced Iraqis receive clothes from a charity at a refugee camp near Feeshkhabour, Iraq, on Tuesday, August 19.Hide Caption 38 of 50The ISIS terror threat 50 photosPeshmerga fighters inspect the remains of a car that reportedly belonged to ISIS militants and was targeted by a U.S. airstrike in the village of Baqufa, north of Mosul, on August 18.Hide Caption 39 of 50The ISIS terror threat 50 photosKurdish Peshmerga fighters fire at ISIS in Khazair, Iraq, on Thursday, August 14. Hide Caption 40 of 50The ISIS terror threat 50 photosAziza Hamid, a 15-year-old Iraqi girl, cries for her father while she and some other Yazidi people are flown to safety Monday, August 11, after a dramatic rescue operation at Iraq's Mount Sinjar. A CNN crew was on the flight, which took diapers, milk, water and food to the site where as many as 70,000 people were trapped by ISIS. But only a few of them were able to fly back on the helicopter with the Iraqi Air Force and Kurdish Peshmerga fighters.Hide Caption 41 of 50The ISIS terror threat 50 photosThousands of Yazidis are escorted to safety by Kurdish Peshmerga forces and a People's Protection Unit in Mosul on Saturday, August 9.Hide Caption 42 of 50The ISIS terror threat 50 photosThousands of Yazidi and Christian people flee Mosul on Wednesday, August 6, after the latest wave of ISIS advances.Hide Caption 43 of 50The ISIS terror threat 50 photosA Baiji oil refinery burns after an alleged ISIS attack in northern Selahaddin, Iraq, on Thursday, July 31.Hide Caption 44 of 50The ISIS terror threat 50 photosA Syrian rebel fighter lies on a stretcher at a makeshift hospital in Douma, Syria, on Wednesday, July 9. He was reportedly injured while fighting ISIS militants.Hide Caption 45 of 50The ISIS terror threat 50 photosPeshmerga fighters clean their weapons at a base in Tuz Khormato on June 25.Hide Caption 46 of 50The ISIS terror threat 50 photosNew army recruits gather in Najaf, Iraq, on Wednesday, June 18, following a call for Iraqis to take up arms against Islamic militant fighters. Hide Caption 47 of 50The ISIS terror threat 50 photosKurdish Peshmerga forces, along with Iraqi special forces, deploy their troops and armored vehicles outside of Kirkuk, Iraq, on June 12.Hide Caption 48 of 50The ISIS terror threat 50 photosChildren stand next to a burnt vehicle during clashes between Iraqi security forces and ISIS militants in Mosul on Tuesday, June 10.Hide Caption 49 of 50The ISIS terror threat 50 photosCivilians from Mosul escape to a refugee camp near Irbil, Iraq, on June 10. Hide Caption 50 of 50EXPAND GALLERYThe media's roleCooper said the media has a responsibility to treat ISIS propaganda carefully. "Every time a still or clip from an ISIS video is shown, the group gets what it wants: the oxygen of publicity," he wrote. "Of course, it is necessary that people the world over are aware of the atrocities occurring at the hands of ISIS, but journalists must be careful not to do the jihadists' job for them."The decision on whether to publicize parts of the recent beheading videos have even divided journalists. International broadcaster Al Jazeera said it had decided not to show any images of Sotloff from the video -- a more conservative position than other TV networks. "We suggest all media do the same," Al Jazeera's public relations account said via Twitter, using the hashtag #ISISmediaBlackout.And while the video has been blocked from various video sharing platforms, they have also reappeared as many times, Quilliam senior researcher Erin Marie Saltman wrote. She said that kind of trend "once again emphasizes that the new frontline for counter-terrorist practitioners is online extremism."Glossy recruitment toolsPart of the problem is the radicals are extremely tech- and media savvy. "We are way behind. They are far superior and advanced than we are when it comes to new media technologies, social media, when it comes to video production qualities, and in disseminating their propaganda over the Internet," said Maajid Nawaz, a former jihadi and author of "Radical: My Journey out of Islamist Extremism." Just WatchedWho is fighting for ISIS?replayMore Videos ...Who is fighting for ISIS? 03:06PLAY VIDEOJust WatchedGRAPHIC CONTENT: ISIS horrorsreplayMore Videos ...GRAPHIC CONTENT: ISIS horrors 05:00PLAY VIDEOJust WatchedDoes ISIS' brutality inspire recruits?replayMore Videos ...Does ISIS' brutality inspire recruits? 02:51PLAY VIDEOSome videos used by the terrorists rival the production quality of Hollywood films. One hourlong video shows a collection of bombings, executions, kidnappings and beheadings. As one roadside bomb blasts a vehicle into the sky, two men in the background of the video chuckle.The recruitment tactics can be both blatant and subtle.For about $10, supporters can buy a shirt with ISIS' logo and phrases such as, "We are all ISIS" and "Fight for Freedom, Until the Last Drop of Blood."And it may be no accident that a militant with a British accent fronted the video of Foley's death.That kind of tactic could inspire more foreign jihadists, a former ISIS fighter told CNN."It is possible that the goal was to project the image that a European, or a Western person, executed an American so that they can showcase their Western members and appeal to others outside Syria and make them feel that they belong to the same cause."READ: Inside the mind of an ISIS fighterREAD: Opinion: Why we must all challenge ISISMAPS: Where do jihadis come from?ISISISIS governor killed in airstrikes The latest ISIS-appointed governor of Mosul was killed in coalition airstrikes on Christmas Day, according to Iraqi police. Author's journey inside ISISAuthor Juergen Todenhoefer says ISIS are "more dangerous than people realize."The Pentagon has a new name for ISISThere's yet another new name for ISIS among those fighting against the terror group. Daesh. FBI warns military of ISIS threatThe FBI warns U.S military that ISIS are looking for individuals who may be interested in carrying out attacks on home soil.Iraqi army's 'ghost' soldiersIraq's Prime Minister says there is evidence of 50,000 soldiers being paid while inactive.Pentagon insider may lead war on ISISPentagon insider Ashton Carter is expected to be President Barack Obama's nominee for Defense Secretary.U.S. seeks strategy reviewWolf Blitzer talks to Rep. Ed Royce about the White House's new ISIS strategy that involves removing Bashar al-Assad.Child fighter tormented by ISIS Just two weeks ago, Yasir was regularly strapped into an explosive vest and handed guns and a radio to stand guard at an ISIS base in Syria.Jihadi Janes try to join ISISHow did three U.S. teenagers become radicalized? CNN's Pamela Brown reports.Why is ISIS so attractive to recruits?Reza Aslan examines the appeal of ISIS and why the group is able to successfully attract so many recruits.This is how ISIS indoctrinates kids CNN's Nick Paton Walsh takes a look at how ISIS is using media to desensitize children. 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