He's yet to have a day in court, and all that's out there are accusations not tested in a court of law. Keep in mind that he was also 15 at the time, making him a child soldier (with all that legally entails). Are you also approving of the alleged torture he's received in Guantanamo since his capture?
Besides, wouldn't want this to get in the way of your hissy fit and prejudgment:
http://www.thestar.com/specialsections/omarkhadr/article/717885--omar-khadr-innocent-in-death-of-u-s-soldier?bn=1 (photos included at link)
Guantanamo detainee Omar Khadr was buried face down under rubble, blinded by shrapnel and crippled, at the time the Pentagon alleges he threw a grenade that fatally wounded a U.S. soldier, according to classified photographs and defence documents obtained by the Star.
The pictures, which were taken following a 2002 firefight in Afghanistan and have never been made public, show the then 15-year-old Canadian covered in bricks and mud from the roof of a bombed compound.
The body of an adult fighter – the unnamed man Khadr's lawyers contend could have thrown the grenade that killed U.S. Sgt. Christopher Speer – lies beside him.
The photographs were part of an 18-page submission presented earlier this year by Khadr's former military defence team to an Obama administration task force investigating Guantanamo.