Zachary Roth apparently thinks so.

But I don’t know that we need to take his opinion into serious account. He’s just another of those exiled British journalists, so orthodox left that he posts in Talking Points Memo, and the sensitive sort who cries on the job.

I seem to remember the left’s commentariat having no similar problem with satirical stereotypes applied in editorial cartoons to people like Condeleeza Rice and Clarence Thomas.