What's something that's viewed as socially acceptable today that you think will become unacceptable 20 years from now?

I wish, but unfortunately am not very hopeful about this :(

Large parts of the world seem to be headed further in the direction of restricting self determination around your identity and your body. The worst part is seeing almost no-one fighting back. I live in the uk though, so some of that is related to the hellish media landscape here >.<