The same chants used against Egypt's Hosni Mubarak are being turned against his successor as hundreds of thousands of Egyptians challenge new President Mohammed Morsi's assertion of near-absolute powers. More than 200,000 people packed Egypt's Tahrir Square on Tuesday in the biggest challenge yet to Morsi. The massive, flag-waving throng rivaled some of the largest crowds that helped drive Mubarak from office last year. "The people want to bring down the regime!" and "erhal, erhal" — Arabic for "leave, leave" — rang out across the plaza, this time directed at Egypt's first freely elected president.