This article is part of a pretty big investigation that's worth reading. It talks about different kinds of "less lethal" force that can kill people. Tasers, punching, body slamming, restraining people face down.
And injecting them with sedatives. It happened to someone with schizophrenia who took meth and was wandering around at night. A guy whose mother made a mental help call when he was having a manic episode. And someone who was having a seizure.