CAIRO (TIP): The same chants used against Hosni Mubarak were turned against his successor on Tuesday as more than 200,000 people packed Egypt‘s Tahrir Square in the biggest challenge yet to Islamist President Mohammed Morsi. The massive, flag-waving throng protesting Morsi’s assertion of near-absolute powers 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. The protests were sparked by edicts Morsi issued last week that effectively neutralize the judiciary, the last branch of government he does not control. But they turned into a broader outpouring of anger against Morsi and his Muslim Brotherhood, which opponents say have used election victories to monopolize power, squeeze out rivals and dictate a new, Islamist constitution, while doing little to solve Egypt’s mounting economic and security woes.

Clashes broke out in several cities, with Morsi’s opponents attacking Brotherhood offices, setting fire to at least one. Protesters and Brotherhood members pelted each other with stones and firebombs in the Nile Delta city of Mahalla el-Kobra, leaving at least 100 people injured. “Power has exposed the Brotherhood. We discovered their true face,” said Laila Salah, a housewife at the Tahrir protest who said she voted for Morsi in last summer’s presidential election. After Mubarak, she said, Egyptians would no longer accept being ruled by an autocrat. “It’s like a wife whose husband was beating her and then she divorces him and becomes free,” she said. “If she remarries she’ll never accept another day of abuse.”

Gehad el-Haddad, a senior adviser to the Brotherhood and its political party, said Morsi would not back down on his edicts. “We are not rescinding the declaration,” he said.