Wrong.
All the countries where there was massive death, like China, USSR, Cambodia, Germany, and North Korea, were all the fault of the US first murdering large numbers of people, and requiring massive conflict to end the US or other capitalist, evil influence.
We attacked Mao after WWII ended, and nearly wiped out his forces.
The west sent Lenin into Russia to get them out of WWI, and we financed Stalin to murder the real communists.
The US was Pol Pot's ally, and we paid and armed him.
We tried to install Syngman Rhee in Korea, and he murdered hundreds of thousands.
The US or the west was responsible for all these deaths.