I painted my computer black hopin it would run faster, but now it just doesn't work
I really think that racist joke about black people is outdated and unfunny.
The point of that statement is that racial slurs are not insults when they are white folks saying it.
While some stereotypes are seemingly positive or neutral, all are very harmful. Instead of assuming based on experiences with other people who look like them, make an intentional effort to get to know people from different backgrounds. I'm sure that'll change your perspective.