They were certainly negligent in not properly assessing McClain (who was already restrained) prior to ketamine admin. Once ketamine was given, they then also failed to monitor and recognize cardiac arrest.
This case will likely lead to change in paramedic emergency care protocols.
I sort of feel sorry for the paramedics in the sense that they were too complacent and should have told the cops “no” when they tried to dictate patient care (as in, ‘you need to sedate this dangerous person’). I work in healthcare too, so I’m familiar with cops trying to dictate medical care and the importance of advocating for your pt when that happens. It can be intimidating to tell a cop to fuck off, but sometimes you have to do it. If nothing else, it’s your ass on the line.