They deliberately concealed evidence from their superiors by not filing an incident report.
and what would the truth have been?
Filing an accurate report.
The way I heard it, they told their supervisors what happened on the scene, in person, immediately after the incident.
At worst, they committed an administrative paperwork violation.
From what I’ve read all they needed was to tell their immediate superiors in the field what happened since they did not believe they hit the perp with any shots.
And they did tell their immediate superiors.
So your left wing propaganda is a lie.