The US had a horrible thing happen on 9/11. Like most of the rest of the world, I was right there with my sympathy and moral support.
Then, let me see:
They commandeered the media to moan and beat their breasts as though they were the only nation ever to suffer such a hideous and damaging attack. Um, welcome to the rest of the world, guys. Do the Irish or the Israelis play drama queen on the international stage every time some fuckwad sets an explosive? No. It was awful, yes, but there comes a time to get over it.
They used this Dreadful, Unprecedented in World History, Ghastly Attack as justification to pursue a -- watch closely now -- completely unrelated grudge war which has, by all reports, been secretly brewing in White House back rooms since Nixon, if not before.
They used their status as Wounded Drama Queens (see above) and Undisputed Biggest World Power to attempt to bully and/or blackmail all other world powers into joining them on the playground to stomp their target in said war. Any world power who refused to knuckle under was libelled and badmouthed both in public -- by your politicians and the media -- and on the streets by your citizens.
When the World Trade Centres were blitzed, my fellow Americans, Canada was right there for you. Mere months later, when we refused to go beat up on Iraqis for you, friends of mine were refused service by gas stations along several hundred miles of your highways because of their Canadian plates.
I don't know if you're evil, but you're certainly doing your best to look like bullying oafs, living by the rather primitive credo of Might makes Right at the expense of all others.