Pervasive stereotyping, I think. It gets so bad that even people who one would think would know better would still use subconsciously. So when someone uses stereotyping as a shorthand for what the person beholden might be like, then there are these expectations.

Kind of like politics; if I hear that someone is either a Liberal or a Conservative, I would sometimes wonder if the person would have these kinds of beliefs which would sometimes affect that person's lifestyle or manner. And then I make great efforts to not care about it.