The homicide rate varies greatly between nations and also between individual populations within countries. What is the primary cause of this phenomenon?
https://www.statista.com/statistics/1214177/homicide-rates-in-england-and-wales-by-ethnicity/
https://researchbriefings.files.parliament.uk/documents/CBP-8224/CBP-8224.pdf
https://www.indexmundi.com/facts/indicators/VC.IHR.PSRC.P5/rankings
https://www.gfmag.com/global-data/economic-data/worlds-richest-and-poorest-countries
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