Two men jump of a bridge, one Jewish and one Black. Which one falls faster? Black. Because chains fall faster than ash
Was this supposed to be a humorous joke?
No, I'm just saying they are being punished because of what they did a long time ago.
Making fun of how black people were slaves in the past is very inappropriate. Whether your intent was to be humorous or not, this joke could really come across the wrong way to some people.