So, at least in my town, it looks a lot like violent protests of the sort you decry do help. Certainly nothing else has done as well.
In all these riot situations, it is portrayed as the poor sticking it to the rich, who presumably are using the police to oppress the poor. But I suspect that in reality it is mostly the poor becoming even more downtrodden by the criminal elements, and the rich remain unaffected. Perhaps the rich even profit a bit from what happens, such as politicians winning more government money to "help with all the troubles".
https://en.wikipedia.org/wiki/Crime_in_Baltimore#Crime_stati...
A little further down:
"Homicides in Baltimore are heavily concentrated within a small number of high-poverty neighborhoods."
So, my prima facie impression from these data points is the stand down has not benefitted the poor.
In either case, you're massively misrepresenting the "stand down" order, which was not a policy of indefinite disengagement, but rather a specific instruction given in the scope of the 2015 protests in an attempt to avoid further escalation. Whether or not the order was successful in that sense is a matter for separate discussion, but to claim it's a permanent thing, the way you are doing, is simply false to fact - which is probably why you still haven't sourced that claim.
While we're on the topic of BPD actions during the 2015 protests, have you heard about the cop who used the opportunity to loot drugs from a pharmacy and later sell them on to street dealers? [1] I suspect not; for all your apparent interest in the doings of the Baltimore PD, you seem surprisingly ill informed. That's far from all the Gun Trace Task Force got up to, either [2], nor were they alone in their corruption. These are things you need to know about, if you want to talk about policing in my town and expect to be worth taking seriously. But here you are, needing to be told about them. I wonder why that is.
[2] https://www.vox.com/platform/amp/policy-and-politics/2018/2/...