We can already do this with proven technology
Wales invented a system that identifies low level gang crime before it becomes visible to police and we already have this - it works and is cheap, and prevents harm and crime.
https://www.cardiff.ac.uk/documents/2665796-the-cardiff-model-for-violence-prevention
https://data.london.gov.uk/information-sharing-to-tackle-violence/istv-case-studies/
https://rcem.ac.uk/information-sharing-to-tackle-violence-istv/
and even the Americans think it is useful
https://www.cdc.gov/violence-prevention/php/cardiff-model/index.html
Rather than spaff a load of money on doing something 'AI', why don't we just spend the money on doing something we have proved works?
It doesn't need AI, it just needs good data and someone use existing resources better.