Then what is the solution to this problem apart from building more basketball courts and banning guns that are already illegal.
I am not saying carding is the solution but I dont see any real solutions being offered.
There are two 'sets' of solutions.
The first is medium to long-term. That is both your guns and basketball courts type of program-set.
Its about preventing a young person, a 12-15 year old male from becoming a gang member, criminal or addict in the first place by providing opportunity, distraction, supervision etc; as well as making it more difficult on someone to become a criminal (not impossible, just a bit less easy).
The shorter term issue is about the people who are engaging in shootings or the like, right this moment. They are already criminals, they already have guns, and for the most part 'soft' programs simply won't work for them. Even where they might (helping someone exit a gang, learn a trade, finish high school or get addiction treatment) it would most often require they be arrested first before an offer of those types of assistance might work.
In the case of the shorter-term problem, arrests are needed. In particular the two or more gangs clearly engaging in a turf war/revenge and who have an impression that doing so in broad daylight, in public, around innocent third parties is ok, have to be put in their place. That means mass arrests.
What we don't know is the extent of police undercover investigations, how much intelligence they have on the responsible actors, and how much evidence is trial-worthy.
I think we owe them the benefit of the doubt that such operations are underway, and presumably will bear fruit soon.
No question, that type of action is needed in both an absolute sense but also in the sense of re-assuring the public.
I don't, however, think that there is any evidence that carding is useful in this sort of enterprise.
What's required is confidential informants, gang members who turn, under cover officers, plain clothes street-crime unit officers who can get a feel for what's going on, involving whom and why; then the appropriate arrests and charges must follow.
But that in no way diminishes the value of actions that help reduce crime in the longer term.
The cost of 200 life-long criminals, who average 10 years in jail a piece and otherwise have less than successful lives is substantial to society Prison, courts, cops, legal aid, parole alone would be over 2M per offender, add in far below average taxes paid, and the costs to victims and you can bank on a cost exceeding 4M per offender.
That's 800M over let's say 80 years. Even a break-even scenario allows for 10M or more per year to prevent that much crime being a very useful investment.
I would much rather pay for a basketball court, or late-night rec centre hours, or before/after school care etc. than I would a prison.
Action on guns can be useful and needs to be understood not as something that makes it impossible for a determined criminal to get a gun, but something that makes it more difficult, costing more money, taking more time and engendering a greater risk of arrest.
What that does is make some criminals less determined, and it reduces gun violence at the periphery. It doesn't wipe out 90% of it; but it can knock it back by 20-40%.
Its one part of a larger strategy (or it should be).