Murder is a byproduct of crime. Crime is, largely, downstream of economic conditions with some obvious caveats.
New Hampshire has the 2nd lowest crime rate of the USA states. You could make the same argument for, say, Switzerland (high gun ownership but no crime/murder). But no one would be surprised if you had high gun ownership in Monaco.
Similarly for the ethnic argument you're trying to make: Majority black neighbourhoods in the USA tend to be poor. They also tend to be near more affluent places. Unlike poor white neighbourhoods, which are on average more rural in the USA.
Being poor, and being next to rich people, and being excluded from legal increases of becoming rich, will increase crime.
This should be obvious. Brazil has famously Favelas right next to wealthy areas and has a persistent crime problem for example.
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In short, it's really incredible how far some Americans will go to deny the obvious truth: *gun prevalence increases deadly crime*.
Sure, some cultural factors will increase crime/violence on the margin. But the reason y'all have a bunch of shootings is that you have a bunch of guns to do shootings with. That simple.
> the reason y'all have a bunch of shootings is that you have a bunch of guns to do shootings with
Yet by your own admission poverty and inequality appear to account for the bulk of the effect.
Actually I think you'll find that plenty of Americans will acknowledge the link you point out. Just not in a politically charged exchange where the other party appears to have an ideological axe to grind. Where they'll likely disagree is the extent or significance of it. In many cases they will object that rights should never be curtailed for the purpose of lowering petty crime (I tend to agree).
I think it's also worth mentioning the statistic that legal gun owners (which is a wildly low bar in the US) have a lower rate of violent offense than the police.
That said, my point was that a place like Rio, where you feel alertness at a physiological level by the constant lack of security, still has a murder rate around Houston, a vastly richer and safer city.
And Brazil really is a good comparison in my opinion: the economic inequality is actually worse than in the USA, and they both have the slave holding history leading to concentrated poverty areas with high ethnic segregation
I don't personally think that the upsides of the US gun laws are worth anything near the downsides being paid.
Regarding the police, American police is notoriously prone to violence compared to other developed countries.
Murder rates in US have very little to do with gun law, and they have very little to do with skin color, even though they're heavily correlated to the latter and weakly correlated to the former.
Compare the USA to Canada, where you can't bring a gun easily. You'll see Canadian murder rates being very low. Even controlling for similar factors at the city or neighborhood level.
Of course I'm blaming the gun: it's pretty hard to kill someone with other weapons. Stabbings are often survived, even.