If anything, these two maps show that homicide is a very tricky problem with lots of factors. At first glance it might appear to show an inverse correlation with gun ownership, but that doesn't hold water when you look deeper.
There are major population portions that have low gun ownership and low homicide rates: China, India, Japan, Iran, UK, Algeria, Egypt, and most of SE Asia, and other random countries throughout. That's got to be half of the world's population.
Then there are places that have high ownership and high homicide rates: Mexico, portions of Central and South America, and Africa.
I'd say the homicide rate is more related to region than anything else. South and Central America and Sub-Saharan Africa are the highest, completely independent of gun rates.
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