Azerbaijani protesters demanding free elections were beaten back Saturday by police, who arrested dozens as they broke up a banned rally in the oil-rich former Soviet republic on the Caspian Sea four days before the inauguration of a new pipeline. Tension between the government and the opposition in the tightly controlled country has increased since an October 2003 election in which Ilham Aliev replaced his late father, Geidar Aliev, as president in a vote the opposition said was marred by fraud. A parliamentary vote is scheduled for November.Officials had forbidden the opposition to protest, citing security concerns four days ahead of the visit of foreign leaders who will attend a ceremony marking the opening of Azerbaijan's portion of the U.S.-backed Baku-Tbilisi-Ceyhan oil pipeline. Norwegian Ambassador Steinar Gil criticized Aliev for the "crude violence" and said it damaged the government's reputation.