From the New York Times:

By Timothy Williams, September 25, 2017

Violent crime, including homicides, rose for the second consecutive year in 2016, driven by increases in a few urban centers including Baltimore, Chicago and Las Vegas, according to F.B.I. data released Monday.

Violent crimes increased nationally last year by 4.1 percent and homicides rose by 8.6 percent, one year after violence increased by 3.9 percent and homicides jumped by 10.8 percent. A total of 17,250 people were murdered in 2016, the F.B.I. said.

While crime over all and violent crime remain well below their levels of the 1980s and 1990s, last year was the first time violent crime increased in consecutive years since 2005 and 2006, according to the F.B.I. data, which is collected from local police departments around the nation and released annually.

Police officials and criminologists continue to express puzzlement about the upsurge.