If an on-air dj made a negative reference to me or about my neighborhood, i would more than likely get upset. But just like me and other listeners would try to call in and voice their opinion, i probaly wouldnt even get through. So i wouldnt even waste my time to entertain ignorance, especially if it doesnt apply to me personally.
I think that anyone who says something wrong on- air, doesnt matter if its a dj or radio show host show face penalties for making slanderious remarks. I cant really say that the dj's penalty was enough, but it served the purpose.