Dozens of opponents of Egyptian President Mohamed Mursi woke up in Cairo's Tahrir Square on Saturday after the first night of their open-ended sit in.br br Protesters want Mursi and the Muslim Brotherhood which propelled him to power to leave. The sit-in comes just ahead of mass demonstrations called for June 30th.br br Protesters set up anti-Muslim Brotherhood posters in Tahrir Square, saying the group was destroying the country.br br One group of young protesters had brought along a guitar to their sit-in demonstration, singing for Mursi to 'leave'.