Not sure why you mention "American" brainwashing.
I don't think religion is a form of brainwashing. Obviously Betsy has a more conservative view than myself about the possible interpretation of the Bible. But I don't think people who have religious beliefs are necessarily "brainwashed". There have been incidents of it, yes. (Jim Jones, etc.) But that doesn't mean every preacher, minister, priest, pope, imam, etc., is brainwashing their respective flocks.