It should be so that they are treated like a pariah and are driven into obscurity. The problem is that they're hiding those views from the main stream and now they call themselves "nationalists" or patriots who go by a number of names and subgroups but they all swim in the same, hateful pool.
Whatever FINALLY marginalized and pushed the KKK into the waste bin of evil racism needs to happen to Nazi's. I'm stunned that it has gotten this far. I think Trump missed a chance on that one.