Did you hear about the comedian that got kicked out of a college event?

They had said that it was because his jokes were too offensive. Bdum tish! I don't know why I did that. That wasn't even a punchline.

Apparently the joke that people took offense to was "Being gay and black can't be a choice because nobody looks in the mirror and thinks 'this black thing is too easy, let me just add another thing to it," While it's not a great joke, it's certainly not offensive in my opinion. Was it offensive to you and why?