Bondage, domination, sadism, and masochism is what that stands for. You've correctly identified one facet of domination, for some folks. There's a lot left the

Bondage, domination, sadism, and masochism is what that stands for. You've correctly identified one facet of domination, for some folks. There's a lot left there which your "BDSM is about social hierarchy" doesn't even begin to address.