In my perception, a lot of people have lived long with the notion that certain things "can't happen here, this is America." I wouldn't hang my hat on that idea, because just about anything can happen anywhere, including here. All it takes is the right (or wrong) spark at the right (or wrong) time in the right (or wrong) place.
Always refrain from saying "never."
I have always said “because you think it can’t happen here, it will happen here”
It’s here