Of course. The Labour Party in the UK (the main opposition party) are tearing themselves apart over it at the moment. I heard on the news that the Democratic party are having similar problems.
Anti-semitism is the stupid man's socialism. The far left see the world through the prism of power struggles. They buy into the conspiracy theory that Jews are the hidden power behind capitalism. Frequently anti-Zionism is a cover for anti-semitism.
Jeremy Corbyn (Labour leader) defended this mural that went up in London in 2012. When he was lambasted for it he hypocritically pretended he hadn't seen it before he offered his support for it.