Body snatchers once went by a different name: Resurrectionists. In the 18th and 19th centuries, British resurrectionists had booming businesses due to high demand for cadavers for medical education. The corpses technically didn't belong to anyone, so the resurrectionists weren't actually stealing property. Still, popular opinion of body snatching was overwhelmingly negative, so resurrectionists often had to buy off a number of the living in order to acquire each corpse. The field died out in the mid-19th century.