And for the record, if the United States as a society decides that gun ownership is important enough to let the mass shootings continue that's OK with me. What bugs me more is the perennial argument that gun control wouldn't solve anything or that it's impossible for the US to address its gun violence problem even if it wanted to.
[1] https://en.wikipedia.org/wiki/Gun_violence_in_the_United_Sta...
[2] https://www.nytimes.com/2016/06/14/upshot/compare-these-gun-...
No one holds Germany responsible for EU partner Croatia's outcomes, yet USA wide outcomes are - despite massive local variations. In a lot of areas of US policy (excluding defence) local budgets will dictate results much more than federal ones.
That's the real challenge for the USA, how to cope with inequality that is as much a factor of geography as politics.