Most of the opponents of Israel and its policies in the US are either anti-Zionists who are not and do not identify as anti-Semites, or people who don't even identify as anti-Zionists just opponents of Israeli policy. And many in both groups are Jewish themselves.
Normal people distinguish between Israel and Jews and call themselves antizionists. It's Zionists who blur the distinction.
There are several countries throughout history where the citizens have been absolutely obsessed with their own race and considered the crusader state to be the sole representative of it. It never ended well.