You win the prize for making the most insults in a post with few facts! First when you prone someone you do it with frames and padding under the body to maximize the physics increase something called West zone 2 which is optima ventilation and perfusion. Putting a knee on someones neck tends to screw up one of the important parameters of gas flow Secondly you crest restrictive pathology by proning on something hard. Like cement.
Do you have references for any of this?
Thirdly a true proned patient keeps the head in midline without deviation to the left or the right.
Look up google images and "proning". Every single picture has their head turned to the left or right.
Additionally what the cops did was indefensible. The trial will show the truth whatever that may be.
The police violated no department policy. Everything they did was by the book. He knew he was dying long before he was restrained. He was acting erratically from the very first. He had taken drugs, by his own testimony, up his anus earlier and was foaming at mouth as pointed out by police in the initial stop. Many drugs were in fact found in his system. He had COVID 19 which he admitted that he was still recovering from.
About the ONLY thing the police didn't do was try to administer CPR and we don't know why they didn't do that yet.
As someone who actually prones patients he is correct. It is done in special beds that allow the patient to be face down without the head turned and padding all the pressure points is key. Your ability to google does not equal medical education and experience.