Right.
Michael Richards went on a rant onstage in a stand-up act, and reacted to a heckler saying the n-word repeatedly. Not only that, but he invoked lynching to the black audience member, saying that if it were 50 years ago, he could have him strung up with a pitchfork up his ***.
Michael Richards understandably suffered for it, and could not find much - if any - work afterward.
At one time, it was perfectly okay to portray women with overtly negative stereotypes as flaky, emotional, and frail people in product advertisements. It's NOT okay now to portray them as such. At one time, it was perfectly okay for a white performer to present himself in blackface. It's NOT okay to do that now.
Understanding the history behind the use of the n-word and how it fit in the subjugation of blacks helps people to see why Paula Deen was shunned so quickly.
10 years ago, Phil Robertsons comments probably would have been glossed over. These days, however, culture has changed - fortunately - to show that queers like me are not inhuman freaks who are only running around looking to destroy the institution of traditional marriage. Just a couple of years ago, I was in corporate meetings with people who boasted about how far they had come with accepting homosexuals by saying they'd only "beat them up a little bit" rather than finding them and killing them.