All those points aside, here's the real problem: the Nazi comparison is being invoked in order to dodge the suggestion made by opposition members that visiting Lebanon and trying to negotiate with Hezbollah members might help defuse future violence. (I'm sure someone else has a Neville Chamberlain example all ready to go as well.) Which means it's really a massive ad hominem attack: anyone who claims that negotiating with a power in the region (and Hezbollah are a power) might help to undercut the anti-Israeli agenda and marginalize the violent extremists is an appeaser, no better than a Nazi-sympathizer, and not worthy of any further attention. Which ignores, of course, that the neocon solution -- bomb the crap out of people we don't like -- has created a civil war in Iraq. What I don't understand is what's wrong with trying it. Certainly, we shouldn't go so far as to allow the equivalent of Poland to fall before getting worried. The lead-up to WWII can teach us at least that much. But, Hezbollah are not the Nazis. (Neither is Hamas.) Their goals are pro-Arab, pro-Muslim and anti-Israeli. They have extremist, violent wings, but also political ambitions. They command thousands if not millions of loyal supporters, spread across many countries. They are, as with all mass movements, rife with internal divisions, which could be exploited to marginalize the violent and support/encourage the diplomatic and political. Note that there's really nothing wrong with a political party in an Arabic country that doesn't want to deal with Israel. The problem is with actively trying to destroy Israel.
When all's said and done, it should be obviously stupid to wade in swinging without trying the diplomatic option first. At the very least because wading into the Middle East swinging is an easy rationalization to support the September 11 attacks (and the allegedly planned Toronto attacks, and the London bombings, etc.). In short, while we need to accept that we are dealing with sub-groups of violent extremists within groups who hold some odious views, we also need to stop pretending that the Israelis parallel the innocent Jews slaughtered by the Nazis. We also need to stop pretending that calling people "terrorists" justifies sending off our military to bomb them into oblivion -- and that this will stop violent retribution coming back against us when the members of the next generation are old enough to handle guns.
Worth noting, incidentally, that Amnesty International has called Israel onto the carpet for war crimes in Lebanon. One wonders what it would take for a Western government to do the same.
(Extra-special bonus for Conservatives or conservatives who object to these views: you've been wrong so many times, you're just not worth listening to any more.)