Why do many Americans blindly follow patriotism?

I do not understand how so many Americans can just go around acting superior to everyone else. Yes I'm happy that we have many freedoms but it just comes off as narrow minded. Like I can't just follow what the government says. I have to think for myself. It also annoys me that religion also seems to tie into it yet they don't think about how the same thing is happening in Islamic countries. What do you think