Always a good sign when they're treating it like you can't go "too far" or else you become a bad guy, centrism is the only way. The most anti-semitism I've seen on the "far-left" are a few takes which make me go kind of at someone for being a little too eager to see Zionists get their comeuppance, being more focused on the pain and suffering than the righting of wrongs. But any actual anti-semites get sussed out pretty damn quick and kicked out of any actual leftist group.