Scalping.

Scalping is the act of removing another person's scalp or a portion of their scalp, either from a dead body or from a living person. The initial purpose of scalping was to provide a trophy of battle or portable proof of a combatant's prowess in war. Eventually, the act became motivated primarily for financial reasons; people received payment per scalp they acquired.

Scalping is often associated with frontier warfare in North America, and was practiced by Native Americans, colonists, and frontiersmen across centuries of violent conflict. Some Mexican (e.g., Sonora and Chihuahua) and American territories (e.g., Arizona) paid bounties for enemy Native American scalps.^[1]Contrary to popular belief, scalping was far from universal amongst Native Americans.^[2]