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US breaks record for most mass shootings in single year after weekend murders
(www.theguardian.com)
News from within the empire - From a leftist perspective
This might be a valid argument. Please do note that I said, it's not JUST the availability of guns. It could also be argued that because America is the most imperialist currently, that it has more instances.
To be completely dismissive of justifying violence as a solution for problems abroad and it not having an impact here is wrong.