Um....guns brandished around in public in the U.S.? where did you get that idea, exactly?
and there's a lot of factors that lead to extra violence in the united states...racial tensions in inner city areas are one of the big things.
For example....Washington D.C. has strict gun control...if i recall correctly, you outrihgt can't own a gun, only police have them.....
Here were the crime statisitcs:
Compare that to El Paso, Texas...the population difference is 584,000 vs D.C.'s 563,000, but this was el paso's statisitcs:
thats a violent crime rate about 40% of washington d.c, but el paso is in texas, with very liberal gun laws and D.C. has the strictest in the nation.
For additional comparison:
Nashville, Tennessee:
Seattle, Washington: 569,101
Boston, Massachusetts: 581,616
those are all similarly sized cities, and while they vary, there's no correlation between gun control and crime rates. That El Paso has the rates it does, and compared to D.C. in particular, show that more guns doesn't equal more crime