You are not angry with people when you laugh at them. Humor teaches tolerance.
At a dinner party one should eat wisely but not too well and talk well but...
Humor results when society says you can't scratch certain things in public...
It was difficult being a teacher and out of the closet in the '50s. By the time I retired the English department was proud of having a gay poet of a certain minor fame. It was a very satisfactory change!