Communists opposed the Nazis in the thirties. They were both evil. And yes, they occupied the same moral plane.
The antifa and BLM thugs are just as evil as the Nazis and are doing far more damage to the country.
Which side do YOU!!! think is the biggest danger to the country.....a few hundred Nazi idiots or the many thousands of leftist thugs now infesting college campi and other areas? .
Actually, since both sides shout down rational discussion, I think both of those extremes are equally bad. If the Left didn't have the "alt-right" to point to, there'd be no real boogeymen to rally against.
In that sense, a few hundred idiots poison the well of rational Conservatism, and enable the leftist extremists by giving them poster children of evil on the "right" (as taught to the mush minded of today).
In actuality National Socialists, Communists, and other totalitarians are the enemy, wherever you stand, because they would deny fundamental rights to anyone who is not one of them, something which is inarguably unAmerican.