I mean, by definition, joking about snipers on the day in history when JFK was taken out by a sniper isn't going to be all that funny. It could be in the right circumstances, but it's a difficult thing to pull off well.
Well, there is definitely something wrong now. Your antisocial tendencies arr stopping you from functioning. Whether you are suffering from a condition or just psychosis, you need some kind of help resolving your issues