To hear them tell it, the officers who apprehended 39-year-old David Pyles on March 8 thwarted a mass murder. The cops “were able to successfully take a potentially volatile male subject into protective custody for a mental evaluation,” the Medford, Oregon, police department announced in a press release. The subject had been placed on administrative leave from his job not long before, was “very disgruntled,” and had recently purchased several firearms. “Local Law Enforcement agencies were extremely concerned that the subject was planning retaliation against his employers,” the press release said. Fortunately, Pyles “voluntarily” turned himself over to police custody,...