>>14328753Solar/battery powered hybrid drones with camera for ir/nightvision with laser strike capability would solve it
With cameras 24/7 above city skies feeding to a local supercomputer, it can detect movements of all cars/people in the city, it can detect all gun shot fires, fires, etc.
Then with a precision laser, zap the criminals from the sky. A 1 kw laser can cause mild damage to people. 10 kw can melt them. Laser would be more accurate and lethality can be tuned.
Sure it wont work always, during rain/snow, people aren't out in the streets that often anyway. The crimes mostly happen due to opportunity. Hence, during the summer/clear days, is when crimes happen. Surveilance/lasers dont care about whether its day or night as it can work 24/7.