Can we finally put to rest the dangerously wrong aphorism that "the only thing that stops a bad guy with a gun is a good guy with a gun"?
Nineteen "good guys with guns" milled around outside a classroom in Uvalde, Texas, some for more than an hour last week, waiting for a janitor with a master key to open the door while children desperately called 911, may have bled out and the 18-year-old gunman squeezed off at least 16 more rounds.
A "good guy with a gun" who worked as a security guard at a grocery store in Buffalo, New York, was powerless last month to stop an armed 18-year-old who wore a bulletproof vest.
