Leonard Pitts: There is nothing natural about this disaster

And again.And still.Nine people shot dead in Dayton, 13 hours after 22 shot dead in El Paso, six days after three shot dead in Gilroy. And tears and disbelief and funeral preparations, candlelight vigils and a search for meaning, and talking heads on cable news and T-shirts and hashtags touting resilience in the face of pain: "Dayton Strong," "El Paso Strong," "Gilroy Strong."And again.And still.And people asking "Why?" and Republican officials trotting out explanations noteworthy mainly for the