By late evening the number of demonstrators had grown to several thousand with the arrival of the ultras – hardcore fans of Cairo's main football teams, some of whom played a significant role in the anti-regime uprising earlier this year – and some Islamist political groups, forcing police units to fall back from Tahrir where protesters quickly built barricades and fires continued to burn.
The retreat marked a significant blow to the security forces, which over the past few months have generally avoided attacking large protests, preferring to wait instead until numbers dwindle and the remaining activists can be isolated and labelled as hardcore troublemakers. On Saturday that tactic appeared to have backfired, with the police assault provoking a strong public response.
"Considering the small numbers that we had this morning, it's amazing," said Hady Kamar, a 26-year-old artist who was hit twice by rubber bullets, once in the foot and once in the head. "When things looked darkest and the police had pushed us out of Tahrir, we returned in huge numbers. To see this many on the street and feel this much energy, is special. Today it feels like the revolution is back up and running, but we'll see what tomorrow brings. It's always been a day by day struggle."
Reprising many of the slogans used during mass protests against Mubarak, demonstrators vented their anger at Scaf and chanted "Here is the revolution, nothing else".