The dullest sort of sexism is one that whole industries depend on and that many men and women are complicit in. The prejudice for people that are attractive and against people that aren't.
Not saying there should be laws, or even an UglyToo hashtag. But it's a social flaw all the same.
For instance, I prefer to see actors that are chosen because they can act, not because they look like Adonis but can't. Not being a proper zealot, I get that to make love stories compelling, some folks must be better looking than average. But let these characters be chosen from the group whose face actually moves.