Thousands of supporters of Egyptian President Mohamed Mursi rally outside Cairo University. This is just a week since opposition protesters demanded Mursi reverse a decision to greatly expand his powers. The president has also tried to push through a controversial new constitution. Saturday's rally was called for by the Muslim Brotherhood, the Islamist group from which Mursi hails. Demonstrators chanted pro-Mursi slogans and called for an Islamic state where sharia law is applied.