Some good news! The number of murders in U.S. cities fell by more than 12 percent — which would be the biggest national decline on record. The spike that started in 2020 now looks more like a blip, and the murder rate is lower than it was during the 1970s, ’80s and ’90s. The recent data also suggests that the violent-crime rate in 2023 was near its lowest level in more than 50 years.