Most police officers shouldn't be carrying weapons in the first place. If an ordinary beat cop gets into a jam that they can't deescalate have them retreat and call for back up. Having thousands upon thousands of people who think they're Judge Dredd roaming the streets is not a good idea.
As I understand it, a lot of police officers are taught to approach every single interaction with a civilian as a potentially fatal encounter, and to be prepared to kill or die at all times. I don't think policing is a job that naturally attracts terrified people, I think it's drilled into them that they're effectively in a war zone at all times. They act like Judge Dredd because they're taught to believe that any person they meet could be The Terminator.
The joke street sign posted above - "Twin Cities police easily startled" - comes from before the deaths of George Floyd and Daunte Wright, it was the fatal shooting of Justine Diamond in 2017. She had called 911 about hearing a woman screaming, and when the police arrived they found nothing. As the police were preparing to leave, Diamond approached the car. The officers "heard a loud sound" and one of them reflexively returned fire, on the assumption - again, drilled into him from the day he started training at the academy - that he was being fired upon. He shot her in the stomach and killed her. The hypothesis is that Diamond was trying to get the officers' attention before they drove off, and banged her hand on the car's hood or roof.
In 2014, in New York City, a pair of officers were doing a "vertical patrol" in the stairwell of an apartment block, when Akai Gurley exited his apartment and slammed the door shut. One of the officers drew his gun and 'returned fire' on what he must have assumed was someone just randomly shooting at him, and killed Gurley, literally because he closed his own front door too forcefully.
In 2018, Sacramento police officers looking for "a tall black man in a hoodie" who was suspected of breaking into some parked cars shot and killed Stephon Clark in his grandmother's backyard because he had a cellphone in his hand. Again, an instantaneous reaction to regard
ANYONE they encounter as a lethal attacker bent on their deaths and shoot him multiple times.
When Lt. Nazario drove to a well-lit gas station before stopping his car, and then was reluctant to get out of his car, he was being completely rational.
In the US, do the police have to give a reason to detain you? This is in reference to this bit:
Daunte said, 'Why?' And he said, 'We'll explain to you when you get out of the car,'
In the UK they can request actions only in very specific circumstances, and would have to name a specific crime in these cases.
There's "probable cause" and then there's "reasonable suspicion." But police have demonstrated that they can't make these judgments to the degree that the Massachusetts Superior Court acknowledged that Black people deliberately avoiding contact with police is reasonable because of continual maltreatment. Police were investigating a report - again, looking for "a black man in a hoodie" - and detained one guy who turned and walked away when they approached him. The Court decided that merely walking away from an officer does not count as "reasonable suspicion" because walking away from a cop is totally reasonable and isn't indicative of any guilt. In this case, the guy wasn't necessarily acting out of fear for his life, he just thought cops are [flippin'] [tools] and he didn't want to deal with them.