https://abc7chicago.com/dexter-reed-chicago-police-shooting-body-camera-video-copa/14637195/
More information here, from the video narration:
The 26 year old was already facing illegal gun charges and if the cops found the gun he'd be going back to jail. He didn't shoot in self defence. He shot because he was a criminal afraid to go back to jail.
https://abc7chicago.com/dexter-reed-chicago-police-shooting-body-camera-video-copa/14637195/
From the video: The 26 year old was already facing illegal gun charges and if the cops found the gun he'd be going back to jail.
At least one clearly had a vest on marked POLICE
It's very likely they ran the plates, knew he was up on weapons charges, saw him not wearing a seatbelt and used that as a pretence to pull him over. End of the day he was a criminal doing criminal things who shot a cop first.