it's not the things they did or any particular word or formulation that ticks me off. It's the sentiment and (if it succeeds) the baseline of emotions it seeds for that event or evening.

Now we can all say that everyone needs to grow thicker skin or something, but in the end it's simply bad taste to alienate significant parts of the crowd. That being said, if I would have been there, I would have been more embarrassed at the stereotype they apparently decided to appeal to than offended, because it was so over the top stupid.

YMMV.