patrick.net

"It’s a truism of humor that a joke is funny when you’re “punching up,” which means joking about the powerful, but not when you’re “punching down,” which points to a man making sexist jokes about women or a white woman making racial jokes."

One of them there truisms, you see. It's right there in the PC Handbook. You can get one at the local Hillary campaign HQ.

http://www.rawstory.com/2015/07/jon-stewart-and-amy-schumer-comedy-or-racial-microaggressions/comments/