As the protests in Egypt reach Day 7, CNN takes a look back at how they have unfolded.

TUESDAY, JANUARY 25

On the heels of anti-government demonstrations in Tunisia, thousands of protesters spilled into the streets of Egypt in a rare display of anti-government outcry. CNN reporters on the scene witnessed throngs of people in Cairo march from Tahrir Square to the parliament building. Demonstrators threw rocks at police, who threw them back and shot tear gas at the protesters, who also reciprocated.

While Egypt estimated that there were 5,000 to 10,000 protesters, CNN estimated that the demonstration peaked at 15,000 to 20,000 protesters.

The protest's organizers said they wanted to mirror the uprising in Tunisia, which 10 days prior had precipitated the end of President Zine El Abidine Ben Ali's 23-year rule. Before the protests in Cairo, several Egyptians set themselves or tried to set themselves on fire earlier in the month, which also was reminiscent of Tunisia, where a man's self-immolation spurred the uprising.

The Egyptian protesters - who included young and old, Christians and Muslims, students, workers and businesspeople - said they were angry over the cost of living, failed economic policies and corruption. They demanded that President Hosni Mubarak, in power for three decades, follow the lead of Tunisia's president.

"We breathe corruption in the air," said one demonstrator.

At day's end, three protesters in the port city of Suez and a police officer in Cairo were killed. Forty-nine people were injured, according to news reports.

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