Police in DR Congo's capital fired tear gas for a second straight day Wednesday to break up violent protests outside parliament over proposed changes in the judiciary. Angry demonstrators, some armed with petrol bombs, blocked traffic outside parliament, erecting barriers and burning tyres. Police first fired warning shots and then used tear gas to disperse them, AFP journalists said. The protesters were mainly motorcycle taxi drivers and supporters of President Felix Tshisekedi's Union for Democracy and Social Progress (UDPS) party. The UDPS is in an uneasy coalition with forces close to Tshisekedi's long-serving predecessor Joseph Kabila. Only a third of the government ministers are from the UDPS. The contested legal changes include proposals to define the powers of judges, which critics say is a ploy to muzzle the judiciary. The proposals come from the Common Front for Congo (FCC) which is close to Kabila, who remains a behind-the-scenes force in national politics. AFP journalists said some of the protesters hauled MPs out of their cars and attacked the homes of Kabila loyalists. Former parliament speaker Aubin Minaku, one of the people behind the proposed amendments, said the "aim is to define the authority the justice ministry exercises over the judges." But Tshisekedi's party on Monday lambasted it as a ploy to "undermine the independence of the judiciary and increase the power of the justice ministry." The opposition Lamuka coalition also said the proposals would "deal a death blow to the concept of separation of powers." bmb-st/ach/ri