A little background on Mosby, the State's Attorney:
More on politics at the state’s attorney’s office | Maryland Daily Record
Goodbye and Thank You: My Open Goodbye Letter to the State's Attorney's Office
Also, the attorney representing the Gray family in their civil suit against the City was a member of Mosby's transition team and her husband is the City Counselman who represents Mr. Gray's district where the arrest took place.
If the some of those factors were reversed, i.e. the State's Attorney was married to the President of the FOP and hand insurance defense attorneys on her transition team, I suggest that those celebrating the "Justice for Freddie Gray" indictments would have simply assumed the system was rigged.
The double standard's and the refusal of some of these people to see their own hypocrisy is both mind boggling and deeply frustrating. Many chanting for "Justice" merely seek mob vengeance. These same people, if a "not guilty" verdict is returned will assert that meant no wrong was done. Again, the demand will be for "guilt by reasonable assumption" rather than "guilt beyond a reasonable doubt."