Mikhailov and others who supported the tactic of killing the Tsar formed the terrorist group Narodnaya Volya, while Plekhanov and others who opposed it formed the rival group Chernyi Peredel.
Mikhailov and those supporting the Tsar's assassination founded the terrorist group Narodnaya Volya, whereas Plekhanov and opponents of this tactic established the competing group Chernyi Peredel.