Protesters
Protesters form a human chain in Tahrir Square to prevent tanks from entering the area.
Sources: Al Jazeera CNN
Sources: Al Jazeera CNN
The government threatens a crackdown as the protests spread.
China blocks searches for "Egypt" on its internet and restricts media coverage.
Reuters reports at least 870 injuries in Cairo alone during the day, according to medical sources.
NDP headquarters are set on fire in Cairo, with Al Jazeera footage showing the building ablaze.