Yes. This is why the Russians and Chinese were very uneasy allies (if even that), regardless of both being communist countries.
The Russians didn’t want the Chinese to become the ruling communist country in the “Comintern”. The same fits for the Chinese! They were rivals after all! But they never deemed each other subhuman, like the Nazis deemed every other race, then the “Aryan Master Race”!
The Nazis wanted to exterminate entire ethnic groups, because they deemed them “unworthy of life”! Do leftists want to do that too? Does Obama want to massmurder Afro-Americans?