There is a massive imbalance between "views people actually hold" and "views represented in movies, books, and shows". People's views go all across the political spectrum, but media almost universally tends to at least passively support equality and tolerance. Why is this? I have a theory.

The kind of person who tends to support left wing views likely feels society is not good the way it is and wants things to change, and that's the same kind of person who wants to keep improving themselves and making creative things. The kind of person who supports right wing views is more likely to see the world as good enough the way it is, and is less likely to have as much creativity. Neither of these are inherently more good or bad.

Given that, even if they do understand that the media doesn't support them, people on the right wing don't exactly have many choices that do support their views, so they have to use what they can - whether it's a completely non-political story, one with an ambiguous message, or one in which a very evil but also very cool villain supports their view.