Exactly. Instead of looking for some ethnic, nationality, or racial commonality to the evil doings of people in history, look at their political bent, always leftist, totalitarian.
And it really has to be said. Today's leftists are very much like the National Socialists and the Bolsheviks of old. Today's leftists shout down their opposition, and demonize their enemies. Conservatives are not just wrong. They are evil racists. Enemies of the people, in other words.