What party or parties are responsible for establishing social norms?

I have mixed feelings about the issue.

Hard to tell what your position is.

Previously (Page 1 of this thread), you said:
"It used to be fashionable or socially acceptable to make jokes about homosexuality because that was something looked down upon. You can't do that now because LGBTQIA advocacy groups will be after you.
You can't be publicly racist, especially on social media, and not get penalized for it."

Based on that, it just seemed that you wanted to make some racist and/or homophobic jokes in public without any issue.

Indian kids at school were being called Apu. It became an insult, and it’s not like there aren’t any Indian actors about. Apu is what is known as a but but.

It’s not just BAME characters who are treated in such an off hand manner, you never hear a genuine Scots accent on American telly. Groundskeeper Willy and Scotty from Star Trek didn’t even try.