The defence of property is a common method of justification used by defendants who argue that they should not be held liable for any loss and injury that they have caused because they were acting to protect their property.
Shopkeeper's privilege is a law recognized in some parts of the United States under which a shopkeeper is allowed to detain a suspected shoplifter on store property for a reasonable period of time, so long as the shopkeeper has cause to believe that the person detained in fact committed, or attempted to commit, theft of store property.