Well, yeah, that's my point: His reason was that he was a self loathing queer with a short fuse. The ISIS shit is his lame ass attempt at justification. And he loses martyrdom points because it turns out the guy ISIS tried to claim as their own was someone they would have beheaded for buggery.
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"When you're up to your ass in alligators, it's hard to remember that you set out to drain the swamp" -- HST