I believe I am unoffendable at this point in life.  I don't care if people make racist or homophobic slurs.  Makes me shrug.  I simply take it as new, possibly valuable information about that person.  They are an airhead - now I know.
But the thing I really don't get is how saying black people like fried chicken is offensive to anyone.  Like if you want to say they're stupid or immoral or whatever - okay, that is a bad thing to suggest about people - but they like fried chicken?  Who doesn't like some nice fried chicken?  Might as well say they like warm sunny weather.  
Still, if I see someone lobbing out the blacks like fried chicken thing, then yes, they generally do identify themselves as an airhead - they are obviously, unmistakably trying something - ineffectual though it may be - so good to know - I like to know who the tools are in the room - 
but the whole thing makes no sense.