A black teenager is facing charges as an adult for what authorities are describing as the revenge arson of the home of a white woman and her two children. And his arrest, and that of a juvenile, may be just the tip of the iceberg, authorities say. Already, Thaddeus Shields, 18, is facing a court hearing this week on the count, and a 17-year-old whose name was not released is facing juvenile court. Authorities, meanwhile, say their investigation continues and more perpetrators may be arrested and charged in the attack in Middletown, Ohio. The alleged black-on-white crime earlier this week...