MANAMA (Reuters) - Tens of thousands of mainly Shiite Bahrainis gathered in Manama on Friday, declared as a day of mourning by the government, in one of the biggest anti-government protests since unrest erupted 10 days ago. Large crowds marched to Pearl Square, the focal point of the protests by an opposition youth movement seeking to bring down the Sunni-led government and calling for a new constitution, inspired by popular uprisings in Egypt and Tunisia. Bahrain saw the worst unrest since the 1990s last week when seven people were killed in protests by its majority Shiites who have long complained of discrimination in Sunni-ruled Bahrain, which is a close US and Saudi ally. The gathering was called by a council of leading religious figures, including Sheikh Issa Qassem, the most revered Shiite cleric in Bahrain. The government had declared a national day of mourning for the protesters killed in clashes which erupted on February 14 and lasted until the government pulled all troops off the streets less than a week later. Meanwhile, around five thousand Jordanian protestors took to the streets on Friday demanding political liberalisation, wider parliamentary representation and constitutional changes limiting the powers of the throne. Reform and change, this is the demand of people, angry protestors shouted among a mainly Islamists and leftist crowd joined by some tribal and liberal figures marching from the main Husseini mosque in the capitals downtown to a nearby square. The Jordanian opposition, spearheaded by the mainstream Islamists, the countrys largest political party, have been protesting for weeks for wider democratic gains as anti-government demonstrations sweep across the Arab world. Meanwhile, tens of thousands of people filled the streets of central Tunis Friday in what they called a day of rage, calling for the resignation of Prime Minister Mohamed Ghannouchi, a former ally of the ousted president. Security forces fired in the air in an unsuccessful attempt to disperse the rally, the biggest since uprisings in North Africas most developed country ended President Zine al-Abidine Ben Alis 23-year rule on January 14 and sparked pro-democracy protests across the Arab world, witnesses said. Protesters, some carrying images of Ghannouchis face merging seamlesly into that of the Ben Alis, shouted shame on the government and Ghannouchi step down in a din that could be heard for miles. The only demand we have is the end of this government, said Alia Soussi, a 22-year-old student joining the protest. We hope Ghannouchi gets the message. The interim government charged with organising elections to replace Ben Ali has already undergone several changes after street protests, but Ghannouchi, seen by some as an asset for his familiarity with the countrys affairs, has remained. He was prime minister for more than a decade under Ben Alis rule, which Tunisians saw as oppressive and corrupt.