Yep, authoritarianism and imperialism is wrong left or right. The United States has a horrible track record on this front it's true. But they'll lose their shit when you state a simple fact like ML nations are generally just as bad. Russia basically invaded and forcefully annexed many nations post WWII. Tried to invade Afghanistan. Imprisoned and slaughtered millions in Siberian prisons to this very day even. All for simple dissent. Nivalny anyone? China isn't really any better either.

They usually break into a sputtering revelry of "But imperialists and the west did X". Which you can easily tear apart with a simple "And?". Because it doesn't justify them doing it.