I think it's fair to hear the opinion of one of the soldiers Khadr shot. Here's a link to the video.
http://youtube.com/watch?v=XwAL_ehXmgg
The guy who submitted the Omar Khadr bio to wikipedia seems pretty pro-Omar, but it's worth reading between the lines in the first bit.
$1:
Although born in Canada, Khadr's mother defended raising the family outside Canada due to her fears of corrupting influences.
In 1988, Ahmed Said Khadr took a job with Canadian registered charity Human Concern International and moved his family to Peshawar, Pakistan. Omar was subsequently enrolled in an Islamic school in the city.
In 1992, Khadr's father stepped on a land-mine while in Lowgar, Afghanistan and nearly died; the Khadr family moved back to Toronto so he could recuperate. Once the family moved back to Toronto, Omar became "hypersensitive to tension in the family" and would often quote Captain Haddock from The Adventures of Tintin.[11] Enrolled at ISNA Elementary School, Omar's teachers described him as "very smart, very eager and very polite".
Returning to Pakistan with his family...
I got a kick out of this bit too.
$1:
A later collection of biographies written by Al Qaeda praising fighters in the country mentions Omar in its article on his "martyred" father. It praises the elder Khadr for "tossing his little child in the furnace of the battle", and likens his son to a lion cub.
http://en.wikipedia.org/wiki/Omar_Khadr