

^ Lenin’s speech on antisemitism, this should answer your last 3 bullet points better than I ever could.
As for modern day, the institutional portion of anti semitism manifests itself as conflating Zionism with Judaism. This is done to protect imperialism.
As you noted in your post, the mainstream anti Israel voices are anti semitic, until a “left” political voice with prominence comes out and detangles peoples perceived associations between Israel and the Jewish people, it’s going to be incredibly difficult to get the average person to listen to you.
They sent him out to Dearborn Michigan so he could talk about “Judea and Sumeria”