Feelings ran high on Saturday night as some 5,000 demonstrators gathered outside Montenegro’s parliament to demand the resignation of veteran Prime Minister Milo Djukanovic and early elections. <br /><br /> Some hurled stones, flares and incendiary devices and tried to break through a police cordon. <br /><br /> Security forces fired teargas for the second successive weekend and Interior Minister Rasko Konjevic told a news conference that 15 police officers were injured, one seriously, and that 24 civilians sought medical treatment.<br /><br /> Andrija Mandic, a leader of the Democratic Front opposition alliance that staged the protest, and his ally Slaven Radunovic were taken for questioning over their roles in the incident, the minister said.<br /><br /> Under Montenegrin law, Mandic enjoys immunity from arrest unless the offence is punishable by a prison term of over five years.<br /><br /> The opposition says the ex-Yugoslav republic is run as a fiefdom of Djukanovic, who has been in power for two decades. The government rejects t