Why do black men cry during sex? Because of the pepper spray
Are you claiming that black men only get sex by raping women?
That's because black people are criminals.
I do not find your joke about black men being pepper sprayed amusing as it can be seen as something a racist person would say, and I do not think that you are racist. People are being pepper sprayed whatever their race is so it is not fair for you to single out black men. What I would suggest you do is try to find a victim of improper pepper spraying to see how painful that is, so that you don't joke about it anymore.
It's just a joke. It's not a big deal.
It's not a joke to spread prejudice ideals such as black men are all criminals. This type of prejudices leads to discrimination and eventually looking down on their race as a whole. Would you like it if someone was intentionally trying to make your race look like terrible people?