But then there was an incident where an officer, claimedly intending to tase a subject, shot the subject instead. Having both gun and taser can confuse.
Yes. That was Oscar Grant at the Bart station in San Francisco in 2009, new years eve. He was face down and slightly resisting. The officer wanted to put a stop to that and wanted to taze him, but shot him in the back instead. The officer got 18 months for negligent homocide, and is out and back at work.