I'm waitin' for the heckler's apology for using the "C" word. Most white people are not that insecure to give a crap about some racist calling them the "C" word.
That's the difference between Richards comments and the heckler's racism.
Whites could care less.
It might be insecurity; but I see it as carrying that proverbial chip on their shoulders. They put the word out there, and they just daaaare anyone to use it.