A person could write lengthy paragraphs digging into the mindset of those who cannot fathom an innocent person being allowed to continue being innocent.   However, in the final analysis you end in a place where you recognize generations of appeased dependency have given rise to a societal construct unwilling, and unable, to conceive of their demands not being appeased. 
Personally, I prefer to allow the groups’ ideological views to speak for themselves.  (Pictured here):

(Reuters) – Activists protesting the fatal shooting in August of an unarmed black teen by a white policeman expressed anger on Saturday after the city’s police chief told local media the officer could return to work if a grand jury does not to charge him criminally.
The St. Louis suburb of Ferguson, which saw weeks of sometimes violent protests following the Aug. 9 shooting, is on edge as a grand jury decides whether the officer, Darren Wilson, will face charges for the shooting of Michael Brown.
Wilson would likely be fired if he is indicted, but could immediately return to duty if he is not, Ferguson Police Chief Tom Jackson told St. Louis broadcaster KSDK, adding that he had not spoken with Wilson to know if he wanted to rejoin the department.
A Ferguson police spokesman did not respond to a request for comment.
Reverend Osagyego Sekou, a leader of the Ferguson protesters, said a return to duty by Wilson would sadden and anger some in the community. Sekou has been training protesters in nonviolent civil disobedience techniques ahead of the grand jury’s report, which could come any day.
“It’s part of a pattern of police impunity,” Sekou said. “They can do whatever they want with no consequences.”  (read more)
Shorter version:

“Give us our pound of flesh”

Goes right along with the video we shared earlier:  If you don’t rebuild those businesses we looted and torched, we’ll loot and torch some more – until you do.