It would be far better to legalize drugs, defunding the gangs.
Of course, as a privileged white male from the suburbs, I could be wrong.
Once upon a time, we tried a "noble experiment" that we called Prohibition. For Chicago, as for most of the nation, the result was vastly increased crime, and gun battles in the streets (remember "the Night Chicago Died", anyone?).
Eventually, we got rid of that particular notion, and thing settled down.
And then we decided we needed to Do Something (about the recreational chemicals of choice of certain, shall we say, darker-skinned citizens) and now we have The War On Drugs.
So far, the War on Drugs (AKA Prohibition II) has had pretty much exactly the same effects as Prohibition.
So, let's try a really bold experiment! End the War On Drugs (Prohibition II), and see if it has the same effects that ending Prohibition had. After all, we can always restart the War On Drugs if ending it doesn't fix the problems.
And, what the Hell, it just might work to let people drink/smoke/inject whatever they want, rather than trying to be Mommy to every citizen....