Pete Buttigieg rivals and critics attack his record on race relations and question whether the former mayor of a mid-sized, Midwestern town is up to the task of being the next commander in chief. After all, it seems that his racist past comes back to haunt him. Buttigieg has struggled mightily to attract support from voters of color, which could be a major issue for him once the calendar turns to more diverse states. Henry Davis Jr., a black member of the South Bend City Council, had a viral Twitter moment this weekend when he attacked Buttigieg for turning a...