Lexicus
Deity
Interesting. Where did the other witnesses witness? I mean give their statements? And why weren't their heard? Who controls the hearings?
The prosecuting authority decides what evidence to present to the grand jury. Since the prosecutor's normal career depends on amiable relationships and coordination with the police, many people do not believe that police can be held accountable through "normal" legal channels and that independent bodies should be appointed to investigate police misconduct.
Reading these stories the impression I have is that the level of violence accepted as normal in he US is one huge failure of that country. Raising the question of why they think they "need" that level of violence.
You already know why. Class inequality, racial inequality and the social problems that go along with that. The long-term trend since the "crime waves" of the 1970s and 80s has been to respond to those problems by militarizing society (a fact of interest here is that municipal budgets often spend more on police departments than on every other budget item combined) and locking up millions of people in extremely inhumane conditions.