Jesus fuck... It's like stupid, badly made anecdotes are coming true. "But what if an attacker was from one of the not banned countries?" It's like satirization of satire. The world is going insane.
Honestly I wouldn't have been shocked if he had tweeted
"A guy in Quebec imported the shia sunni slaughter that is so horrible. So-called "judiciary" won't let me protect USA. they're right on our borders. Tradeau is a loser. Sad!"
The attacker is now claiming that he acted totally on his own, without any link to ISIS, and that he actually wanted to vandalize artwork rather than harm people (even though he lunged at soldiers outside of the actual museum).