.... If it can be proven that the Officers broke with protocol and failed to restrain the perp on many multiple occasions ... which according to this report ... they did .... sounds like the minimum would be manslaughter but probably negligent homicide (the death at the hands of another person(s) through gross negligence or without malice). The charge and punishment would most likely be similar to Manslaughter.
I concur. Though the policy change was a recent development. Manslaughter at best, in my opinion with known evidence. Though there is a good deal of reasonable doubt so get ready when the officer walks for the riots.
Listening to the press conference, it appears the manslaughter is what is going to be charged as the most serious charge.