Whenever the "tens of millions killed by communism" number gets trotted out, it's invariably considering everybody who died due to lack of assigned resources under communism. Which is fine, but it means you need to go over to the west and count up all the people who died of preventable means (not to mention making per-capita adjustments) as well for a fair point of comparison.

Every person who died of preventable illness because they couldn't afford healthcare? Death by capitalism. Every dude who puts a bullet in their head because of financial strain? Death by capitalism. Every person who's ever died of complications of malnutrition while their country exports food (the U.K., large swathes of Africa).

Numbers are meaningless when you don't put them in context.