I think something along the lines of; Capitalism is unable to ever “win”. No matter how many communists you kill, how many of them you force to live under capitalism, or how many of them you force to “disavow” communism, you can’t kill the idea. The struggle never ends, dialectics tells us this very clearly: Capitalism is unable to solve it’s inherent contradictions, even if all knowledge of communism were to disappear, someone would inevitably bring it up again.

Or he would aggressively point at this picture with the quote over and over again.