Hi there rtax
I've think I've seen the show you refer to and watched it because I've seen Chris Rock in a couple of films that I've really enjoyed. But I switched off after 5 minutes and haven't watched it since.
There are still entertainers - and it is mostly 'comedians' - who blatantly use many forms of bigotry - in this case racism - in their acts. The caveat 'contains material likely to offend' seems to be widely used to deflect the outrage of audiences.
As Octavious points out, the popularity of these people wanes as their 'audience' becomes more aware and increasingly embarrased at the subject matter.
Bigotry in any shape or form is, at the least, indication of ignorance and lazy thinking, at worst, a result of institutionalised brain washing.
Either way, it's up to the individual to 'wake up' and take personal responsibility for the way they act, think and speak. Vote with your actions - don't watch it again. If it doesn't get an audience it won't stay on the air for long.