America's national mythology has reverence for the militia-men who stood shoulder to shoulder on the bridge at Concord. Citizen-soldiers and their flintlock rifles are woven into the cloth of Liberty. Movies and television shows set in the American West the sheriff called out citizen-soldiers to defend civilization from bandits and outlaws-- the posse.
Organized private violence was part of American culture from the earliest times, and shaped American's relationship with our government and our guns.