I've read various reports about the cause of Floyd's death from the "professionals" one which said that there was no evidence of lung/neck damage and one from the Hennepin county medical examiner who said it was a contributing cause among other factors including Floyd's dangerous drug level and bad heart.
So what was it? How can they rule it a homicide when they've officially stated that Floyd had a lethal level of drugs (fentanyl) in his system and a very bad heart.
The maneuver was a legal use by the police until this incident. I would guess they've used it in the past to subdue unruly arrestees like Floyd. If any of them died from the maneuver, wouldn't that have been reported previously?
Did Floyd resist arrest? Unequivocally yes.
Was he in a highly agitated, possibly in a deranged state of mind at the time of the incident. Again, yes.
Was Chauvin's neck hold legal at the time? Yes.
So how could they rule it murder of any degree?