I won’t say there are no communists on the left, but they are very few in number. Even most people that call themselves “socialist” really mean something more like capitalist with a string safety net. Any communists in the left are a threat to exactly nobody right now. They don’t really have many opportunities to forcefully take central control of the means of production.

Unfortunately Nazis can do their work retail, they don’t need to take over government to do real harm individually.