Subduing Suspects Face Down Isn’t Fatal, Research Has Said. Now the Research Is on Trial.. Asphyxiation, Choking, and Suffocation, Police Brutality, Misconduct and Shootings, Murders, Attempted Murders and Homicides, Deaths (Fatalities), Research, Forensic Science, Black, Anton (d 2018), Floyd, George (d 2020), Prude, Daniel (d 2020), United States