I personally believe freedom of expression should extended to even racists and that those who blaspheme other's religions should be protected under law. However, I think one should chose to use their freedom responsibly and be reverent towards holy things--one's own and, where possible, those of others. It's hard for many of us to understand how so many people empower a random newspaper editor to cause us to go crazy and turn violent--I certainly don't understand. But the cause shouldn't be to celebrate insensitivity. The Iranians aren't winning any points by encouraging holocaust denial. Let them sink in their own mud. Encouraging anti-semitic cartoons may be interpreted as a license to others to do likewise. A better response would be to send cartoons mocking their president's ignorance in denying the holocaust to the iranian paper (w/ccs to free press papers to make their censors accountable) and place bets on whether they can show them without being shut down.
Man shot dead in northern Israel town of Bi'ina, police say the murder was gang related (Haaretz)
from the article: Israeli cartoonist solicits anti-Semitic caricatures by Jews