Chokeholds or strangleholds are known also as neck compressions, which involve applying pressure to both sides of the neck.
They are allowed in some martial arts competitions, and certain U.S. military personnel in ground-combat units may learn to apply chokeholds, and associated safe releases, in training.
But in the past few years, police departments have increasingly banned the use of chokeholds, following events such as the deaths of Eric Garner and George Floyd.
There are few data on how often police have used the holds, or what the consequences were.
Among the few studies is one reporting that officers in Spokane, Wash., used neck restraints 230 times in the eight years before May 2021, when Washington State banned them.