What the Hell!!!

What in the world possesses someone, let alone two people, to drive along the highway, get pulled over, then pull out assault rifles and kill police officers?? What is going on with our world?? Police officers, sworn to protect us, are gunned down for no reason. Fellow officers, our Brothers, killed......FOR WHAT??? Two Daddy's will never return to their families now because two idiots had no respect for the law or the lives of fellow human beings.