First, as Cindy Sheehan saw fit to publicly say the other day, anger at the state of Israel (I would even go further and say the ruling class of Israel) should never transpose itself as bigotry against Jews. Never.
Second, I agree that the Israeli ruling class is arrogant and that Israel functions as a colonial settler state. But Iran's ruling class is also arrogant, and Ahmadinejad is a hateful, opportunistic, steaming pile of s**t and both the Israeli and Iranian ruling classes don't care about their people, and even less about other peoples. I'd just appreciate it if you'd acknowledge that the Netanyahus and Ahmadinejads (and the Bushes) grow from the same patch of fungi.
If you want a world where nations and ethnicities and religions are no longer threatening each other, the only way to get there is by forging common interests and solidarity between the workers, parents, children, teachers, clergy, bureaucrats, athletes, artists, scientists, and soldiers inhabiting those nations. There's no other way. Taking sides ain't gonna do it.