Imagine a scenario where a small group of cops is watching a peaceful rally. You and your family are part of the rally. Now, a subgroup of the people near the rally start to pelt the cops with bricks and rocks. The cops are surrounded and wildly outnumbered. If de-escalation does not immediately work and the cops have a less-lethal means of response, they should use that initially. If you deny them all the less-lethal means, they're going to use lethal means to defend themselves. You and your family are now in the area where copper bullets are flying because you didn't want the cops to have tear gas.
I'm sure being tased sucks. I know tear gas sucks. I'm also pretty sure both suck a lot less than being shot and that the Taser company and police use of tear gas have saved lives.
Why, and where did they come from? I'm not here for this scarifying nonsense, which is little better than pro-cop propaganda. The police are a heavy militarized force and the police's use of less lethal weapons in the current conflict is being done to escalate and injure; for example, rubber bullets are meant to be fired from 40-70 feet away and bounced off the ground to deter approach while minimizing injury, but cops have been firing directly at people and causing serious injuries, including the loss of eyes. Yesterday evening cops in armored vehicles in Walnut Creek CA were telling unarmed protesters with their hands ups to 'get out of the way or you will be dead'. There are Tiananmen square moments happening all over this country right now so you can take your imaginary wild subgroup and stuff it back into the collection of worn out authoritarian tropes that it came from.
If cops find themselves in your fantasy situation it's because they have earned such ire. I advise them to put their hands up and allow themselves to be disarmed and taken prisoner.