From a Washington Post story by Robyn Dixon headlined “Russians snitch on Russians who oppose the war with Soviet-style denunciations”:

Parishioners have denounced Russian priests who advocated peace instead of victory in the war on Ukraine. Teachers lost their jobs after children tattled that they opposed the war. Neighbors who bore some trivial grudge for years have snitched on longtime foes. Workers rat on one another to their bosses or directly to the police or the Federal Security Service.