Why not laser control of people? You could setup a dazzler which blinds, say, someone pulling out a gun in a public place. You could couple it with an alarm system to have a limited 'area denial' system?
That something is considered somewhat safe under very specific usage restrictions doesn't mean that's how it will be used. Rubber bullets are rated only for indirect fire by bouncing off the ground from a safe distance, yet no law enforcement officer faced any consequence over almost exclusively firing them directly at protestors, often at too short a range even for indirect use.
The damage in lasers is not caused by brightness but by literally heating up and burning parts of the eye because you're shooting an already dense beam at a lens. A flashlight is much safer and doesn't require fancy AI to aim.
That said, I hope you're not seriously proposing putting literal sentry guns in public places to deal with shootings. I thought I wouldn't have to explain why you can't fix the result of socioeconomic problems with technology.
What do you mean by this? In what jurisdictions is it a crime to “interfere” with someone that pulls a gun?