The internet brought together all people, whether they wanted to be together or not. It challenged old racist and sexist stereotypes by having actual, accidental contact between awful people and the people they despised or misunderstood. By this process, it raised the hackles of those awful people, and their first-generation response is to unionise their awfulness, banding together to reinforce their old ideas to each other and convince themselves that the world is wrong, not them.
Mokalus of Borg
PS - I don't think that will be the response forever, though.
PPS - I mean, I hope so.