The level of hatred directed at Omar Khadr is quite astonishing, even for the Muslim-haters on this forum. Facts:

Omar was born in Canada, and as a very young child traveled back and forth to Pakistan. At age eight, Omar was taken one last time to Pakistan by his father, who by this time had become a militant Islamist. At age nine Omar was taken to Afghanistan and spent the rest of his life there until his capture in 2002. During this time he was indoctrinated into militant Islam. 

The account of the firefight where he was captured leaves great doubt that he caused the death of anyone. Regardless he was either an armed combatant and entitled to defend himself, or a child soldier and hence not legally responsible for his actions. Nevertheless he was jailed in the notorious Bagram and Gitmo prisons. His treatment was grotesque, and for the alleged crime the punishment far exceeded anything a Canadian court would've meted out, even assuming his guilt.

Compassion is the proper response.