Beats me why people get offended, and I mean it seriously.
Why would you care? We are talking about a joke here, or maybe a tv show : it's on tv and it's gonna stay on tv, so get over it.
It's not like if you get denied a job or a rent because of your race. And I don't even know why we can't use the word race and we can use the word, say, ethnicity. The two words mean the same thing. Only, race is a much better word in my opinion : it means roots, which by connotation means origin.
Oh, and don't get started on the fact that race is perjorative while ethnicity isn't. I could elaborate, but let's just say that, back in the days when racism was popular, both words were pejorative. So why did one word became correct while the other didn't ? Maybe that's because racists continued to used the fairer word for themselves while the rest of humanity I dunno.
Still, all this rant is to say : I have no idea why people get offended. It's pretty stupid of them to get offended if you ask me.
I fled to chase dreams that I can't yet describe.
I wake up, shivers, I hope my dream wasn't you.
But son, your dad, it ain't me, it can't be.