[smokingfrog]

How do you identify someone who is unstable and likely to commit gun violence? (Other than the fact that they’re probably a paranoid, loser liberal?)

[marktwain]

You really cannot. These cases are so rare as to be non-detectable.

This graphic gives needed perspective on the "epidemic" of mass shootings.  The question an unbiased observer might ask is "Why is such enormous attention given to such a tiny fraction of deaths?