Sakinah Aaron was walking into the bus area at the Wheaton Metro station several weeks ago, talking loudly on her Motorola cell phone. A little too loudly for Officer George Saoutis of the Metro Transit Police. The police officer told Aaron, who is five months pregnant, to lower her voice. She told the officer he had no right to tell her how to speak into her cell phone. Their verbal dispute quickly escalated, and Saoutis grabbed Aaron by the arm and pushed her to the ground. He handcuffed the 23-year-old woman, called for backup and took her to a cell...