The family of Sonya Massey demanded justice Tuesday and claimed authorities had tried to cover up Massey's fatal shooting by a sheriff's deputy. 

Then-Sangamon County Sheriff's Deputy Sean Grayson is now charged with Massey's murder.

The family said if it weren't for the bodycam video of the shooting that was released Monday, no one would know the truth.

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University of Chicago Law School Professor from Practice Sharon Fairley—who formerly headed the Chicago Civilian Office of Police Accountability, which investigates shootings by Chicago Police—likewise noted how the escalation happened quickly.

"I did not see anything in that video that to me made it appear that she was presenting that kind of threat to the officer," said Fairley. "It seems that they just immediately escalated to deadly force."

Read more at CBS Chicago