By Joe Johnson Authorities are investigating the reported rape of a woman by three men during a Halloween party at a bar in downtown Athens. The 29-year-old victim told police that the assault happened late Thursday night at Duke’s & Dottie’s on East Broad Street, where a man in a Joker costume led her from the dance floor into a restroom where two other men were waiting and they all took turns raping her. After the suspects left the bar, the victim told a friend about what