Egypt's prime minister, Kamal el-Ganzouri, addressed the violence in a news conference on Saturday, saying the fighting was an attack on the country's revolution.
"This is not a revolution, but a counter-revolution," he said. "Those who are in Tahrir Square are not the youth of the revolution."
He added that his government would not confront peaceful demonstrations with any force, but he said protesters "threw rocks and destroyed everything they came across".
Al Jazeera's Rawya Rageh, reporting from Cairo, said the "overall impression that came out from the prime minister was that he was blaming the protesters".
Read the full story: Clashes continue on the streets of Cairo