I usually object to the use of "murder" as a stand-alone statistic because in the modern era, all else being equal, over time the murder rate will appear to go down -- even if the exact same numbers of people are being shot -- because ER trauma care and first responder infrastructure tends to improve and become more effective over time. So as time passes, more people who get shot are having their lives saved by improved emergency services and medical care.
So when you're comparing today to the 1960s, ... even the 1990s, ... it's almost unavoidable that the increase in murders is being
under-reported.
Murder rate jumps back to 1990s levels, data show
... Every city that reported data saw at least a 20%-25% jump in murders. Twenty-two percent of cities with a population of over 250,000 that reported data saw the most murders ever recorded since the federal government began keeping logs in 1960.
“We’ve never seen an increase like that. Previously the biggest one-year increase in murder was a 12.5% increase in the 1960s," statistician and crime analyst Jeff Asher told the Washington Examiner. "We’re really talking about unprecedented increases in murder."..
... "These spikes in murder are unsurprisingly associated with hostility towards the police and a retreat of police from public life," Lehman said. "When that happens, unsurprisingly, crime goes up." ...