I'd say a chronic arguer. If you agreed with him he'd fine another bone of contention to get off on.And you are an idiot.
Well, I disagree, but OK....let's play your game.
Look at the list of most developed countries:
https://en.wikipedia.org/wiki/Developed_country
Murder rates per 100,000
United States: 3.8
Argentina: 5.5
Latvia: 4.7
Cuba: 4.2
Lithuania: 6.7
Estonia: 5.0
https://en.wikipedia.org/wiki/List_of_countries_by_intentional_homicide_rate
Now.....why do you think only developed countries should count? Is it because poverty, hopelessness, and ghettoes are the root cause of murder?
Then why are we talking guns?