No, they're literally taught that protecting their lives and the lives of their fellow officers is their top priority. They're taught by the 'warrior mindset' not to treat civilians like, well, civilians, but instead like potential enemy combatants.
Sure, they're mitigating the personal risks they endure on the job, but they're doing so at the cost of increasing the risk of harm and death to everyone they encounter.
I don’t agree with this. I think they are preparing for particular forms of the worst case, and its causing these incidents.
Is killing innocent civilians the worst case? This outcome isn’t being considered.