@ossobuco,
That's similar to my opinion. I don't see anything humorous about the Stalin/Jew thing - and I try to test my biases, though that is really difficult.
And then of course, I see a lot of Mohammad drawings as potentially funny - again, trying to check my biases, but I find humor in many of them. I can at least understand the attempt at humor. Since Islam "forbids" any depiction of Mohammad at all, and since I take offense to Islamists demanding to the threat of death that non-Islamists follow that non-depiction law, my sense of humor may be affected...
I have been offended by what some call satire, but I defer to people's right to self-expression.
I think there is a difference between satire and drawings / depictions that aren't intended as satire, but are designed to offend races or religions. I'm not sure anything should be done about them, but they should at least be called what they are.