CAIRO (Reuters) - A man who was beaten and dragged across the ground naked by Egyptian riot police during a demonstration on Friday was shown on state television blaming the incident on demonstrators. A video of Hamada Saber, 48, being beaten with truncheons by helmeted police has infuriated the opposition, which accuses President Mohamed Mursi of ordering a harsh crackdown on protests two years after the uprising that toppled autocrat Hosni Mubarak. ...