Undercover officers kept files on them: AP investigation
                                
                                
                                    (Newser) -
                                    Looks like Muslims aren't the only ones the NYPD  has spied on .  The AP  has uncovered documents showing that undercover NYPD officers infiltrated liberal political organizations, attending meetings and keeping intelligence files on activists. The effort ranged well outside their jurisdiction; in April 2008, for example, an officer was...