Here’s “something” we all can do (even if you hate guns)
blog.hsoi.com
blog.hsoi.com
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You make these too statements [in comments], seemingly unaware of the implications:
“I don’t think we can blame guns, or taking God out of schools, or poor mental health care” … “The best I can think is one of cultural difference and societal structure”.
You’ve highlighted the glaring societal differences between the United States and other western democracies that are high consumers of US media and culture, yet don’t suffer from the rate of gun crime: gun control, secular states, universal health care. And in the same breath you dismiss them?
It’s no wonder that many US citizens take the same view as yourself that: “We must take this same acceptance of reality with active shooter or mass murder situations”. Unable to challenge the underlying assumptions that guns, god and the private sector are what’s best, you’re left to defend the status quo as an inevitability.
Respectfully, I think that more can be done, than to ask kids to fend for themselves.
Self defense training is well and good for anyone, but I suspect you're far more likely to be near someone who requires CPR (the example in the article) than to legitimately worry how you might react to a mass shooting.
(I would copy and paste it here but I am on a tablet. Sorry 'bout that.)