I didnt know that bar was owned by a negro. I will make sure i will never set foot in there again i was in there once !
Is there something wrong with a black person owning a bar?
No, I don't. It's just a joke. Get a sense of humor lol.
Though it may be a joke, some people could think it isn't a joke. Your joke could exacerbate feelings of racism in others where there was nothing there in the first place.