In his book Breaking Down Walls, Glen Kehrein writes about climbing to the roof of his college dorm in Chicago after the assassination of civil rights activist Dr. Martin Luther King, Jr. in 1968. “The sound of gunfire bounced eerily back and forth off the large buildings, and soon my rooftop perch provided a near panoramic, yet horrific, view. . . . How in the world did I get from a Wisconsin cornfield to a war zone in the inner city of Chicago in less than two years?” Compelled by his love for Jesus and people whose backgrounds were different from…