https://www.npr.org/2020/06/01/867219130/george-floyd-independent-autopsy-homicide-by-asphyxia
“Floyd died due to "cardiopulmonary arrest complicating law enforcement subdual, restrain, and neck compression," according to the report.”
They were not there to see how he was acting before the neck hold and video shows h was most likely already in the midst of a drug induced heart attack!