The other issue is that the deceased's ambulance chaser is making this guy out to be Parent of the Year, complete with carefully selected pictures of him with his family. A prosecutor looking to charge these cops with criminal homicide will need to look at the guy's toxicology report. Was this guy a Hispanic Rodney King, hopped up on stimulants and fighting the cops every step of the way? You'll have no argument from me that he did not deserve to die. But it's a big stretch from saying the cops accidentally asphyxiated him to saying they deliberately beat him to death.
That's not an issue, that's his job.
There are two important issues in this event. One, police killing an unarmed man. Witnesses said it was unjustified, but we don't really know. That will go through the process.
Two, police stealing phones from witnesses because they thought the incident was recorded. It doesn't matter was true about the first issue, the second is unacceptable, and isn't disputed.