Anti-semitism exists, absolutely yes. But condemning the state of Israel of war crimes is not example of one, no matter how Israeli government tries to twist it.
If you support the action of Israel against the civilians of Palestine, it doesn’t matter if you’re a Jew or not - you deserve the scorn you get.
If you’re a Jew and you do not support this hell, I’m very sorry if you get any hostility directed to you, you’re a victim too. You deserve love and safety. Condemnation of the actions of Israel is in no way directed at you.
But Israeli military generals and government should face international trial for what they’ve done. It is crazy somebody in their right mind dares to support them in the 21st century.