Attempts and comparing this cartoon to that of the NY Post Chimp cartoon fall flat. The Star of David, is representative of the state of Israel which does, in fact use the Star of David in it's national flag. This state uses force of arms (The headless soldier) against a population that is relatively defenseless (represented by the dimunitive figure of "gaza"). The headless soldier can be said to represent the lack of thought behind the recent actual event of invading gaza and the admitted murder of civilians by Israeli forces.
So, If the ADL and Simon Weisenthal center don't like the cartoon, then perhaps they ought to take up the subject with the government of Israel.