Cairo ( CNN ) -- Tens of thousands of Egyptians , angered by their nation 's slow progress toward reforms , converged in Cairo 's iconic Tahrir Square on Friday to pressure the interim government to speed up the process . Protesters are determined not to leave until their demands are met , said Walid Rashid , one of the founding members of Egypt 's pro-reform April 6 youth movement . Their intentions to stay were reflected in the number of tents that popped up in the square , the center of the revolution that ousted President Hosni Mubarak from power February 11 . Five months after that historic event , Egyptians are disgruntled with the slow pace of change . Some protesters said they planned to remain in the square for 18 days , the length of the revolution . In recent days , anti-government demonstrations have raged , sometimes devolving into clashes . On July 2 , armed men attacked protesters at the square . A group called the January 25 Coalition has issued a range of demands , calling for the removal of Cairo 's head of security and an investigation into the violence at the rallies . The group , named for the day anti-government protests began this year , also called for the release of those detained after the demonstrations . The military-led government that took over when Mubarak resigned has been prosecuting several former officials accused of ordering security forces to fire on protesters . A police officer accused of killing 20 protesters during a January 28 demonstration has been sentenced to death . Mubarak is scheduled to face the Cairo Criminal Court on August 3 on charges of corruption and deaths of protesters , officials said . At least 25 former Egyptian government officials have been referred to the Cairo Criminal Court with charges related to the February 2 attack in Tahrir Square , known as the Battle of the Camel , said Adel Saeed , a spokesman for the general prosecutor 's office . They include former members of parliament , businessmen and members of the dissolved National Democratic Party . The suspects include Safwat El Sherif , the former head of the Shura Council , and Fathi Suror , the former speaker of the Egyptian parliament . Egypt 's military rulers have set parliamentary elections for September . CNN 's Frederik Pleitgen contributed to this report .
Some protesters demanded an 18-day stay in Tahrir Square . Many Egyptians have said they have not moved fast enough . Protests earlier this year forced President Hosni Ahmed to resign . The opposition has taken over the government since Ahmed resigned .