https://nyti.ms/3gyoVqd - "At least 336 people have been murdered in Chicago through July 2, according to the Chicago Police Department; because murders typically increase in the summer, the city is on track to match the 778 deaths in 2016, its deadliest year since the mid-1990s. <...> Chicago is not alone. Before the coronavirus hit, homicides were escalating nationwide in early 2020, and although the lockdown brought a pause, they began rising again as the stay-at-home measures were lifted. A national study showed that homicide rates fell in 39 of 64 major cities during April and began creeping up in May."
https://www.nytimes.com/2020/08/04/nyregion/nyc-shootings-co... - "On Sunday, another 19 people were shot in New York City, one fatally. Through the first seven months of this year, shootings were up 72 percent over the same period last year and murders rose 30 percent, even as reports of other violent crimes like rape, assault and robbery fell."
Witnesses refusing to talk to cops is a problem. Given the "current conflict", witnesses may be even less willing to talk than usual. And camera surveillance with a good facial recognition system (i.e. one that has been trained and certified to recognize faces of all ages, ethnicities, and phenotypes, not just white college students) would certainly seem like a solution that could help track down murderers.
Anyway, that's what helped in NL.
Exaggerated, but I haven't really seen neither need nor success of any facreg system.
Sure, security agencies might be able to supply some cases when it helped to catch a criminal, but the side effects suggest it isn't even slightly worth it.