Those Baltimore riots were sparked because a man who was in custody suffered injuries that could not have been caused any other way except by the police who held him, and all of them were acquitted. When people see that the system is intent on protecting the police, that means a lot of people aren't going to care whether that woman's husband makes it home or not.
Crime has been falling at the same time as police misconduct (not just the actual abuses, but the protection around them) has become more visible. Somebody needs to de-escalate it, and that would be a great place to start.