1 of 17
Mohammed Abu Zaid, Associated Press
Egyptian protesters gather around Tahrir square during the clashes with the Egyptian riot police, unseen, in Tahrir square, Cairo, Egypt, Monday, Nov. 21, 2011. Egyptian riot police clashed Monday with thousands of protesters demanding that the ruling military quickly announce a date to hand over power to an elected government.

CAIRO — Egyptians are converging on Cairo's central Tahrir Square in response to a call for a so-called million-man march as protests against the country's military rulers enter a fourth day.

Thousands of Egyptian protesters have been camping out on the square and clashing with police trying to force them to leave.

They hoisted a giant Egyptian flag and chanted slogans on Tuesday, evidence that an offer of resignation by the civilian Cabinet the day before has failed to quell the spreading unrest.

Egypt's state-TV says three people were killed overnight in the eastern city of Ismailia, raising the overall death toll from the protests to 29.