The recent ambush and murder of Dallas (Texas) police officers has been consuming and draining for many of us who live here. David Brown, Dallas’ Chief of Police, has responded incredibly well to an unthinkable horror. During the standoff with the shooter who had already taken the lives of five officers and wounded seven more, plus two civilians, Chief Brown stayed on top of negotiations between the Dallas Police Department (DPD) and the shooter. But those negotiations only revealed that Micah Johnson, well-protected and heavily armed in a parking garage, remained adamant about his agenda: to hurt and kill as many white people, and white police officers specifically, as he…