A lot of this show's humor is in the realm of satire, and so it can seem really offensive sometimes to people who aren't as familiar with that genre of humor/writing. I haven't seen much of this season, but I saw the first season, and I get more of the impression they're more shining a light on the prejudices and such that actually exist in society, in a humorous way, than that they're actually racist as a show - but that's just this straight white woman's perception of it.

I may not be qualified to judge. ;)