Silencing a Protester

Alright, listener, settle down. This joke is... uh... well, it's based on a really old, really dumb, and super offensive racist stereotype that Black people can't be seen in the dark. So, the 'punchline' is that if you turn off the lights, you make the 'black protester' disappear, thus 'silencing' them. Get it? It's not funny because it's just plain racist and relies on dehumanizing someone based on the color of their skin. And yeah, fact is, you probably needed that explained, didn't you?