On Mass Shootings...
In every instance, we failed the victims long before the madman touched a firearm. One cannot rationally argue that these people descended into madness in a vacuum. Someone, somewhere knew something. And did nothing. The "this is not my problem" attitude condemned the victims to their fate.
In short, we are ALL to blame. People here don't ask anyone else if they're okay (incidentally, a study of suicides makes reference to how many suicide notes stated that had just someone even pretended to care, the person would not have killed themselves). People here don't say something when they see something, especially in northern VA - see a toddler making a beeline for the sliding door to run onto a busy street? Not my problem. Someone's car broken down? Honk and swear - make sure to not offer any help. Guy shot and bleeding out next to your gas pump? Step on over, pay no mind.
At the same time the left has closed mental health institutions in the name of humanity, and the right cut access to mental healthcare because they see it as welfare. This abandons the caretakers as well as the mentally ill.
The social contract broke down into utter selfishness. That's what's killing people.
Of course, it's much easier to make the assault weapons ban and magazine size restrictions in effect in CT at the time of the last shooting national. American Exceptionalism: repeating the same thing the states tried on a national level and expecting different results.