Injecting a suspect with a drug without medical necessity or consent is a major human rights issue, and you wouldn’t be far off if you called it rape.
The whole thing is quite obviously pig lies; they had dogs and tasers on this 140lb black man who they had already had multiple cops choking out. Nothing about their dodge adds up.
Just barely dangerous. You might see a bit of transient respiratory depression, but the risk of respiratory arrest or clinically significant hypoxia is very low even in an out-of-hospital setting. We have case reports of paediatric patients receiving as much as 50mg/kg without significant ill effect.
https://sci-hub.tw/https://doi.org/10.1016/S0196-0644(99)800...
Ketamine doesn’t really depress respiration that much. If the airway is physically obstructed, however, because nobody had their eye on him...
My goodness that's a lot of ketamine.
A "strong" recreational dose would be about 1mg/kg. 2.5mg/kg and the person is anesthetized.