TUNIS - Tunisian police wielding batons and firing teargas scuffled on Saturday with hundreds of protesters demanding the departure of the government and angry at a heavy handed response to demonstrations this week.The new protests in the North African country, where the Arab world's tide of unrest began, are rooted in fears an interim administration will renege on its commitment to democracy after the ousting of President Zine al-Abidine Ben Ali in January."We now need a revolution to follow the revolution," said Abdoulrahim Jalouli, holding up his mobile phone to show pictures of police chasing down other youths in the streets near the centre of Tunis."You see. The police are the same as before. There is no change," he said.