CAIRO - Protesters flooded Cairo's Tahrir Square on Friday in the second giant rally this week, angrily vowing to bring down a draft constitution approved by allies of President Mohammed Morsi, as Egypt appeared headed toward a volatile confrontation between the opposition and ruling Islamists.
The protests have highlighted an increasingly cohesive opposition leadership of prominent liberal and secular politicians trying to direct public anger against Morsi and the Islamists - a contrast to the leaderless youth uprising last year which toppled autocrat Hosni Mubarak.
The opposition announced plans for an intensified street campaign of protests and civil disobedience and even a possible march on Morsi's presidential palace to prevent him from calling a nationwide referendum on the draft, which it must pass to come into effect. Top judges announced Friday they may refuse to monitor any referendum, rendering it invalid.
Protesters gather in Tahrir Square in Cairo, Egypt, Friday. Giant crowds of protesters packed Cairo's Tahrir Square and marched in other cities Friday vowing to stop a draft constitution that Islamist allies of President Mohammed Morsi approved hours earlier in a rushed, all-night session without the participation of liberals and Christians.
Demonstrators march under a banner resembling an Egyptian flag in Tahrir Square, where liberal and secular parties are holding major protests against Egyptian President Mohammed Morsi's latest decrees, Friday.
If a referendum is called, "we will go to him at the palace and topple him," insisted one protester, Yasser Said, a businessman who said he voted for Morsi in last summer's presidential election.
Islamists, however, are gearing up as well.
The Muslim Brotherhood, from which Morsi hails, drummed up supporters for its own mass rally Saturday. Islamists boasted their turnout would show that the public supports the push by the country's first freely elected president to quickly bring a constitution and provide stability after nearly two years of turmoil.
Brotherhood activists in several cities passed out fliers calling for people to come out and "support Islamic law." A number of Muslim clerics in Friday sermons in the southern city of Assiut called the president's opponents "enemies of God and Islam."
The week-old crisis has already seen clashes between the two camps that left two dead and hundreds injured. On Friday, Morsi opponents and supporters rained stones and firebombs on each other in the Mediterranean city of Alexandria and the southern city of Luxor.
The Islamist-led assembly that worked on the draft for months passed it in a rushed, 16-hour session that lasted until sunrise Friday.
The vote was abruptly moved up to pass the draft before Egypt's Constitutional Court rules on Sunday whether to dissolve the assembly. Liberal, secular and Christian members and secular members had already quit the council to protest what they call Islamists' hijacking of the process.
The draft is to be sent to Morsi on Saturday to decide on a date for a referendum, possibly in mid-December.
The draft has a distinctive Islamic bent - enough to worry many that civil liberties could be restricted, though its provisions for enforcing Shariah, or Islamic law, are not as firm as ultraconservatives wished.
Protests were first sparked when Morsi last week issued decrees granting himself sweeping powers that neutralized the judiciary. Morsi said the move was needed to stop the courts - where anti-Islamist or Mubarak-era judges hold many powerful posts - from dissolving the assembly and further delaying Egypt's transition.