Places like Baltimore's East/West sides and South Chicago already have arial surveillance, shot spotter, street corner camera, nearly limitless police power, and CommStat operations. These things have been in place for at least a decade and don't seem to be moving the needle.Sure, they could go full PRC, but I doubt anyone has the appetite for that level of draconian surveillance.
In my experience living in one of these places, police mostly don't investigate crime even when there's clear video.
My point is that the tech is of questionable quality, the application is horrible, and people hate it all the same. Anything that actually "work" would be so oppressive as to be untenable in the American context. Also, no one who is already policed in the US trusts the institution of policing in America to not abuse their most basic rights.
In my experience living in one of these places, police mostly don't investigate crime even when there's clear video.