Dude i gotta tell ya you have been brainwashed by someone about Shias. Shias hate america. Tell me have you ever caught any Shia suicide bomber? No? All of them are Sunnis and Wahabis etc. And there are sub sects in Shia like in Sunni( Barelvi Hanfi etc). So don't blame all shias for the bad...
I have too many Sunni friends they are nicest and their belief is almost same they only fold their hands while we don't in Namaz. They don't discriminate like Saudi Yahudi stupid Arabians.