The horror of choosing not to coerce or threaten others with violence? What the mob does or does not acknowledge is irrelevant to what an ideology is proposing. Mobs also don’t care about peace and order yet that’s what most people want. You’re making an assumption of what would happen if the state didn’t have a monopoly on violence. You are also disregarding that protection/security is a good like any other which can be sourced in the market as many businesses like banks, department stores, private schools, etc. do today. What does not have to be assumed is the horror and body counts of communist and socialist countries where the state has an even greater monopoly of coercion and violence than in western democracies. I grant that many people today are more than okay to have a government coerce and commit violence towards groups they don’t like. Voluntarism is not for everyone I suppose.