Well then questioning the character of each dark man to leave his family and each nerd to shoot his school up are genuinely horrifying things too, yet here we are in a subreddit where people joke about it and it is called 'Dark Humor'. It's not just about joking around about the adversity and behaviour found in some black people's lives, it's about just having a different point of view towards everything which offends literally everyone in the society. I'm not against getting offended but offending about it makes no sense because we aren't doing help towards society by being offended but are in an insignificant way by keeping ourselves sane and just taking it casually as a joke. If you can't or don't want to understand it, you're allowed to leave the subreddit at your will.