In Tahrir square, the message is loud and clear: Mubarak must go. After 30 long years, many ordinary people are no longer afraid to speak out: "We were watched closely, we were scared to speak up" says one man. Despite facing a stubborn and unrelenting president, the protesters are determined to oust Mubarak, with thousands refusing to leave the square: "We will be here until he leaves" another protester shouts. As the sit-in continues, violence breaks out. Trouble-makers on the pro-Mubarak side attack protesters in the square and a hail of stones rains down in retaliation - at least 11 people will be killed in these clashes.

Produced by Dateline, SBS Australia