This is not true. America makes larger claims about fighting wars for moral reasons. People naturally resent hypocrisy. Also, the American war machine has had a planned militarily strategy of attacking civilians since the Civil War. I will respond to some of your other points later. Iraq is a bad example in my view. America was ok with Saddam until they weren't. America is fine with how the Palestinians are treated. We pick and choose our Hitlers. We manufacture them when we need another war.