https://crimeresearch.org/2017/04/number-murders-county-54-us-counties-2014-zero-murders-69-1-murder/
origin - https://www.pipiscrew.com/2018/02/murders-in-us-very-concentrated-54-of-us-counties-in-2014-had-zero-murders-2-of-counties-have-51-of-the-murders/ murders-in-us-very-concentrated-54-of-us-counties-in-2014-had-zero-murders-2-of-counties-have-51-of-the-murders