It is no secret that the majority of American Jews are liberals - at least above a certain age. I have heard, though, from family members in America that this past war with Hizballah has changed a lot of people's opinions.
Westbankpapa pointed out this article in Opinionjournal which just affirms this view. Read the whole thing - and send it on to your liberal friends!
There has been an awakening on the Israeli left also, as I have written before. On the other hand, there are still plenty of left wing thinkers who refuse to see what is right in front of their faces - and continue to lay the blame for the lack of peace in the Middle East strictly on Jewish shoulders. I won't link to them, but if you really want to you can look at the editorial section of Haaretz - the left sidebar. Don't forget the antacid first.