Violent crime is plummeting. Why?

Violent crime levels have dropped significantly in the first half of the year, according to a new report from the Major Cities Chiefs Association.

Overall, violent crime dropped by 6 percent and homicides fell by 17 percent in 69 cities compared to the same period last year. Columbus, Ohio, saw the biggest drop in violent crime at 41 percent, according to an Axios data analysis. But cities including Miami, Washington, DC, and Austin, Texas, also saw large declines. Notably, New York City was not included in the data, though other reports have indicated that...