The U.S. isn't living on the front lines the way Israel is, so the opportunities for bashing aren't the same. The acid test of anti-Semitism is if a person can live among and interact with Jews without feelings of hostility. If he can, then everything else is political opinions, "legitimate" or not. Certainly a lot of leftist criticism of Israel is irrational. But that doesn't make it anti-Semitic, just anti-Western. The left wants the entire West to become weak so it can impose a communist agenda.
"The acid test of anti-Semitism is if a person can live among and interact with Jews without feelings of hostility. If he can, then everything else is political opinions, "legitimate" or not."
And the macro picture is that if countries can not live with and interact with a Jewish State without feelings of hostility then it is anti-Semitism.
What you fail to factor in is that much of criticism of Israel is PC cover for the left. In a post-Holocaust Europe it is simply not acceptable to attack Jews per se.
Nevertheless since the Second Intifadah record numbers of Jews in Europe have been attacked, with very little done, and studies show it is connected to leftist demonization of Israel, what do you call it? When the Arab media conflates Jews with Israel in their venom, I get the picture.
What do you make of Europeans when they say -- we don't dislike the American people just your government? Does that wash with you? Or do you think, as I do, we are the government and they hate us? That actually came more clearly to the surface when Europe's headlines post-Presidential election read how 53% of Americans were morons.