US President Barack Obama addresses a press conference during the second day of the NATO Summit at the Polish National Stadium in Warsaw on July 9, 2016. The Polish capital hosts a two-day NATO summit, the first time ever that it hosts a top-level meeting of the Western military alliance which it joined in 1999. / AFP / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
Video Ad Feedback
Obama: America is not as divided as some say
President Obama called for unity while speaking in Warsaw, Poland about a spate of shootings and police tensions in the United States.
01:38 - Source: CNN
Dallas Police Officers Shot 37 videos
US President Barack Obama addresses a press conference during the second day of the NATO Summit at the Polish National Stadium in Warsaw on July 9, 2016. The Polish capital hosts a two-day NATO summit, the first time ever that it hosts a top-level meeting of the Western military alliance which it joined in 1999. / AFP / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
Video Ad Feedback
Obama: America is not as divided as some say
01:38
Now playing
- Source: CNN
black voices in dallas orig cm_00001904.jpg
Video Ad Feedback
What black men in Dallas need you to know
01:23
Now playing
- Source: CNN
Slain Dallas Officers
Video Ad Feedback
Obama speaks at Dallas service for slain officers
01:20
Now playing
- Source: CNN
Police Chief at service
Video Ad Feedback
Dallas police chief recites Stevie Wonder at service
03:28
Now playing
- Source: CNN
dallas police officers memorial mayor michael rawlings sot _00000000.jpg
Video Ad Feedback
Dallas mayor: Officers died trying to stop the violence
00:53
Now playing
- Source: CNN
Barack Obama July 12 Dallas police memorial
Video Ad Feedback
President Obama: We all know racial bias exists
03:04
Now playing
- Source: CNN
Dallas trauma surgeon Brian Williams talks to Don Lemon about the Dallas shootings
Video Ad Feedback
Dallas trauma surgeon: This has to stop
01:35
Now playing
- Source: CNN
trauma surgeon brian williams part 1 intv lemon ctn_00004418.jpg
Video Ad Feedback
Surgeon describes treating Dallas officer (Part 1)
04:41
Now playing
- Source: CNN
trauma surgeon brian williams part 2 intv lemon ctn_00052602.jpg
Video Ad Feedback
Surgeon describes treating Dallas officer (Part 2)
08:47
Now playing
- Source: CNN
dallas shooting victim shetamia taylor officer yelled sot ac360_00021129.jpg
Video Ad Feedback
Dallas survivor: Officer yelled, 'He's got a gun!'
02:28
Now playing
- Source: CNN
CNN's Sara Sidner shows you what a pound of C-4 on a robot arm does in light of the Dallas Police tactic against a sniper.
Video Ad Feedback
How Dallas police used a robot bomb to stop shooter
02:36
Now playing
- Source: CNN
one Dallas protesters come together nccorig_00000506.jpg
Video Ad Feedback
Opposing protesters meet in Dallas
01:20
Now playing
- Source: CNN
dallas shooter parents speak micah johnson blaze ath_00003124.jpg
Video Ad Feedback
Dallas shooter's parents speak out for first time
02:51
Now playing
- Source: CNN
dallas police chief david brown shooter was singing sot sotu_00002401.jpg
Video Ad Feedback
Police: Dallas shooter was singing during standoff
01:00
Now playing
- Source: CNN
dallas shooting victim shetamia taylor officer yelled sot ac360_00021725.jpg
Video Ad Feedback
Shooting survivor, family talk about attack
09:49
Now playing
- Source: CNN
dallas police chief david brown protesters sot_00003706.jpg
Video Ad Feedback
Police: We'll give our lives for your right to protest
01:03
Now playing
- Source: CNN
DALLAS, TX - July 8, 2016: Dallas Mayor Mike Rawlings (R) looks on during a press conference at Dallas City Hall as Dallas Police Chief David Brown speaks on the fatal shootings of five police officers on July 8, 2016 in Dallas, Texas. At least one sniper killed five officers and wounded seven others in a coordinated ambush at a anti-police brutality demonstration in Dallas. The sniper was killed, and three other people are in custody, officials said. (Photo by Stewart F. House/Getty Images)
Video Ad Feedback
Dallas police chief praises officers during shootings
01:00
Now playing
- Source: CNN
shootings protests in arizona police clash pepper spray_00001214.jpg
Video Ad Feedback
Protesters and police clash in Arizona
00:49
Now playing
- Source: CNN
police and protester
Video Ad Feedback
What cops and African-Americans have in common
02:02
Now playing
- Source: CNN
dallas shooting 0708 t1 inset 02
Video Ad Feedback
Dallas protest shattered by ambush shooting
02:37
Now playing
- Source: CNN
Dallas Mayor Mike Rawlings says they believe Dallas police shooter Micah Xavier Johnson acted alone
Video Ad Feedback
Dallas mayor confirms gunman was the lone shooter
01:06
Now playing
- Source: KDAF
Bystanders stand near pollice baracades following the shootings.
Video Ad Feedback
Shooting at Dallas protest in 60 seconds
01:09
Now playing
- Source: CNN
Dallas Police respond after shots were fired at a Black Lives Matter rally in downtown Dallas on Thursday, July 7, 2016. Dallas protestors rallied in the aftermath of the killing of Alton Sterling by police officers in Baton Rouge, La. and Philando Castile, who was killed by police less than 48 hours later in Minnesota. (Smiley N. Pool/The Dallas Morning News) -- MANDATORY CREDIT, NO SALES, MAGS OUT, TV OUT, INTERNET USE BY AP MEMBERS ONLY
Video Ad Feedback
Chaos in Dallas as 12 officers are shot
02:16
Now playing
- Source: CNN
TOPSHOT - Bystanders stand near pollice baracades following the sniper shooting in Dallas on July 7, 2016. A fourth police officer was killed and two suspected snipers were in custody after a protest late Thursday against police brutality in Dallas, authorities said. One suspect had turned himself in and another who was in a shootout with SWAT officers was also in custody, the Dallas Police Department tweeted. / AFP / Laura Buckman (Photo credit should read LAURA BUCKMAN/AFP/Getty Images)
Video Ad Feedback
Police: Suspect said he wanted to kill white officers
02:26
Now playing
- Source: KDAF
A Dallas police officer, who did not want to be identified, takes a moment as she guards an intersection in the early morning after a shooting in downtown Dallas, Friday, July 8, 2016. At least two snipers opened fire on police officers during protests in Dallas on Thursday night; some of the officers were killed, police said.
Video Ad Feedback
Desperate calls from Dallas officers during ambush
00:47
Now playing
- Source: CNN
Balcony Dallas shooter freezeframe
Video Ad Feedback
Video from balcony shows Dallas shooting
01:23
Now playing
- Source: Ismael Dejesus
People rally in Dallas, Texas, on Thursday, July 7, 2016 to protest the deaths of Alton Sterling and Philando Castile. Black motorist Philando Castile, 32, a school cafeteria worker, was shot at close range by a Minnesota cop and seen bleeding to death in a graphic video shot by his girlfriend that went viral Thursday, the second fatal police shooting to rock America in as many days. / AFP / Laura Buckman (Photo credit should read LAURA BUCKMAN/AFP/Getty Images)
Video Ad Feedback
'It looked like an execution'
01:13
Now playing
- Source: CNN
dallas police officer shooting ground vo_00003228.jpg
Video Ad Feedback
See video of Dallas shooting
02:38
Now playing
- Source: Facebook/Michael Kevin Bautista
president obama reacts to dallas shootings from warsaw poland_00000000.jpg
Video Ad Feedback
President Obama reacts to Dallas shootings from Warsaw
02:32
Now playing
- Source: CNN
dallas police shooting chief david brown negotiating with suspect sot_00001104.jpg
Video Ad Feedback
Police: Suspect said he's going to kill more
00:59
Now playing
- Source: KTVT
dallas police officers shot gunshots heard sot ctn_00000007.jpg
Video Ad Feedback
Gunshots ring out in Dallas, officers killed
01:17
Now playing
- Source: CNN
Balcony Dallas shooter freezeframe
Video Ad Feedback
Dallas witness: People were trampled following gunshots
01:03
Now playing
- Source: CNN
Balcony Dallas shooter freezeframe
Video Ad Feedback
Witness describes Dallas police officer getting shot
01:10
Now playing
- Source: CNN
police officers shot dallas texas witness sot ctn_00010002.jpg
Video Ad Feedback
Dallas shooting witness: I heard about 20 gunshots
02:28
Now playing
- Source: CNN
tx shooter witness_00000000.jpg
Video Ad Feedback
Dallas Witness: 'Complete Pandemonium' after shooting
00:56
Now playing
- Source: KTVT
Dallas People Running July 7
Video Ad Feedback
Disturbance in Dallas sends people running
01:32
Now playing
- Source: KTVT
generic police
Video Ad Feedback
When can police shoot?
01:55
Now playing
- Source: CNN