But police say no sign of forced entry
                                
                                
                                    (Newser) -
                                    The campaign office of Michael Grimm, a Republican congressman from Staten Island, has suffered a break-in, with the windows smashed by cinderblocks and computer hard drives erased,  Politico  reports. Grimm claims the attack was "politically motivated. This is an attack against a federal campaign office, which is an attack...