Voluntary People's Druzhina
Voluntary People's Druzhina (Russian: Добровольная народная дружина, ДНД, Dobrovolnaya narodnaya druzhina, DND) variously translated as Voluntary People’s Guard, People’s Volunteer Squads, People's Volunteer Militia, etc. were voluntary detachments for maintaining public order in the Soviet Union similar to a neighborhood watch.
Source: Wikipedia — Voluntary People's Druzhina (CC BY-SA 4.0)