Comics doing jokes about racism and stereotypes: do you think it's creating steps towards acceptance?

The example I’ll use for this question will be Lisa Lampanelli. If you’re unfamiliar with her comedy, the majority of her routine (as well as many other comics) consists of race and stereotype jokes. I’ve heard her say that the people that ‘get’ her act understand that it’s actually combating racism and that getting people to laugh about it and bring it out in the open is a way to (i’m not sure how to word it) bring acceptance(?). My question is do you agree that comics doing these types of acts are combating bigotry or do you just find them offensive?