(REUTERS)  The Afghan-born father of Omar Mateen, the man police identified as the gunman who killed 50 people at a packed gay nightclub in Florida on Sunday, is a fringe political commentator who rails against Pakistan and Afghan President Ashraf Ghani. Seddique Mateen, who public records indicate is the father of Omar Mateen, had an occasional television show on a U.S.-based Afghan satellite channel for about three years, and has continued to post political commentaries […]