So  : "Roughly two-thirds of gun deaths are suicides ...", 
and : "Overall, the firearm death rate rose to 12 deaths per 100,000 ..."

So, that should equate to 'roughly' 4 deaths per 100,000 being homicides.
Meanwhile: "drug overdoses, which hit 20 per 100,000"
And : deaths by vehicular accidents - 10.9 deaths per 100,000 (2015).
{sar}
By all means, let's rewrite the Constitution and stop this scourge ...  {/sar}