Watch: Retired LA cop reacts to new bodycam video of police 'execution' of Alton Sterling
A fired police officer puts . gun to Alton Sterling's head about a minute before executing him/Screenshot

The police officer who killed Alton Sterling was fired Saturday afternoon after police released graphic new bodycam footage shows what some are describing as an "execution."

"Don't you move, I'm gonna shoot you in your f*cking head," screams officer Blane Salamoni, within seconds of making contact with Sterling outside the bodega where he was selling DVDs.

The extremely disturbing video of Blane Salamoni killing Sterling after a confrontation in which Sterling had his hands up is below.

CNN panelist Cheryl Dorsey, a retired Los Angeles police officer who wrote a book about police violence, pulled no punches in reacting on CNN.

"People are tired of these investigations happening behind closed doors and then seeing officials come out there are make the same pronouncements," said panelist. "People want transparency. What do I mean? Bring it in front of a jury... instead of an . official making a unilateral decision not to charge."

"That was an execution," Dorsey said. "We heard those officers threat Mr. Sterling and then they did exactly what they said they were going to do."

"I don't care if they're disruptive or they're not cooperating, you don't get to use expletives when you refer to them. You don't get to threaten them, I will shoot you in your effing head if you don't be still" she said. "The fact that this officer got fired beings me no comfort. He needs to be charged with a criminal offense, he needs to be convicted of a criminal offense."

CNN_03-31-2018_16.04.06 from Martin Cizmar on Vimeo.