What all mass shootings have in common
Another day in America, another flurry of bullets, another massacre.
Sometimes, the gunman opens fire at Walmart, apparently because he believes America is being invaded by Mexicans, who must therefore die, as in El Paso on Saturday (22 dead; more than two dozen injured).
Occasionally, he shoots up a former workplace after resigning for murky "personal reasons," as in Virginia Beach on May 31 (12 dead; four injured).
At other times, as in Pittsburgh on Oct. 27, 2018, accordin...