Because questioning the Israeli government's actions is the same as hating jews as a people. You don't know how many times I had to stand up for the american people back when I was living in Spain, when George Bush was carrying out the infamous intervention in Iraq. I would hear things that I found quite offensive being an american myself. Yet you rather take the morbid route of tagging people over a web forum, I get it.
Well I said it as a question.
And I dont get offended by American insults. Most of us are idiots.