(Reuters) - In a 2011 season in which the New Orleans Saints rewarded players for injuring opponents in a "pay-for-pain" bounty scheme, the team was among the most violent in the National Football League, a Reuters analysis shows. The Saints were second in the NFL with 17 regular-season defensive flags for violating rules intended to protect players from being hurt, just behind the Oakland Raiders' 18. The league averaged nine per team. The Raiders have a long, proud tradition of aggressive rule-breaking. ...