A research that grants the power to craft the item, Totem/War Totem.
Totem is made from wood. War Totem is made from wood and bones. (Animal bones or people bones.)
Totems would be placed at the edge of camps to ward off tribal raids in the early game. Certain traights would negate the effects of the totem such as Psychopath, Blood Thirsty, etc.
Pirates and other more developed factions shouldn't be affected in my opinion. Maybe a possible 10-25% chance to ward off a few. Maybe people with certain traights or influenced by drugs.
Leave comments and suggestions below. (: