a possible good argument: the left has spent decades saying that the right was alienated and turned a blind eye to all the problems of the universe. "if I don't see it, it doesn't exist", left accused them as daily act. and now that's precisely what they wanna do. "if you ban it, it doesn't exist". much easier than a intelligence operation, infiltrating the group, finding out the identities by other means, arresting the bad guys and providing a real solution to the problem. much simpler to use it as an excuse to punish everyone -- with objectives other than nazism (or pedophilia or terrorism) in mind.