Tunisian protesters have stepped up calls for Prime Minister Mohamed Ghannouchi and his cabinet to resign. Thousands took to the streets of Tunis and other cities, while the main trade union began a march on the capital. Policemen were among those protesting. They had defended the regime of former President Zine al-Abidine Ben Ali before he was ousted last week. Mr Ghannouchi, who long served under Mr Ben Ali, has promised to leave politics after elections. They are expected to be held in the next six months, though no date has yet been set.