(CNN) -- Supporters of Bradley Manning will rally in several cities Friday to urge the U.S. government to drop charges against the soldier accused of leaking an Iraq war video to the WikiLeaks website.
Organizers say demonstrations will occur in about 19 cities, including New York, Los Angeles and Toronto.
Manning, an Army intelligence analyst, is being held at a Quantico, Virginia, detention facility. He is charged with leaking an airstrike video that the whistleblower website WikiLeaks published in April.
Manning, 22, has been charged with illegally transferring classified data onto his personal computer and adding unauthorized software to a classified computer system in connection with the leaking of a video of a helicopter attack in Iraq in 2007.
He has also been charged with communicating, transmitting and delivering national defense information to an unauthorized source and disclosing classified information concerning the national defense with reason to believe that the information could cause injury to the United States.
Those charges are in connection to the leak of the same video.
The 2007 footage shows an Apache helicopter gunship attack that killed a dozen Iraqi civilians, including two journalists from the Reuters news service.