No, the people who suppressed nazi sympathizers during ww2 are not the same as people committing the holocaust.
The Allies were fighting a war against the Axis powers. While the Nazis rounded up civilians for all kind of reasons, including political views.
We aren’t in a civil war in America right now. There is no basis to take action against modern fascists outside of the numerous acts of domestic terrorism they commit. Rounding up fascists solely based on their political views make us like the Nazis and is unbecoming of any free society.
All these “authoritarian” socialist societies had democracies.
Not the USSR, China, or North Korea which is what I was referring to by authoritarian communists.