I told that same joke to eddie murphy in 1991 and it made watermelon seeds fly out of his nose, so maybe you're just an idiot.
If there weren't any white people those little ingrates wouldn't have jobs, and black comedians certainly wouldn't be recieving the fruits of their labour. They also wouldn't be comedians, they wouldn't aspire to be either as like roman implied, they'd have no material. And "stand up comedians" wouldn't exist anyway. Black athletes would have no arenas to display their abilities, instead they'd just "make an impressive oryx catch" and their buddies would be like "not bad.... nnngh! my skin worms are killing me" and that would be the end of it. Also they wouldn't be so athletically able, as white people wouldn't have bred them to be such. There'd be no music industry for them to leech off of, and their talents would only be applied to primitive bongo drums and foot-to-dirt percussion anyway. No sound studios or production equipment. This little guy wouldn't even have a cow to suck the shit out of; Please Register or Log in to view the hidden image! Whitey domesticated the bovid, blackey got his hands on some after the fact. White people get alot of crap, when they effectively dragged humanity out of the jungle. They might be "holding some brothers down" I don't know, it's irrelevent because the heights that brother aspires to only exist thanks to whitey. The whitey giveth, and the whitey taketh away, dawg.
You wouldn't be reading anything other than "signs" which an antelope had left in the grass. And that's only if you were the village genius (and you, duendy, most certainly would not be- I've a feeling you'd be the village cow-rimmer).