Huge protests have taken place through the night across Egypt calling for the country's president, Mohammed Morsi, to resign.
Tens of thousands of protestors were on the streets of the capital Cairo and crowds in the city's Tahrir Square were the biggest since the revolution in Egypt in 2011.
At least one person was killed in Cairo and four died in clashes in other parts of the country.
Officials say more than 200 people across Egypt have been injured.
Mohammed Morsi was elected one year ago but people are unhappy about the way he's running things.
A lack of jobs, as well as fears over his religious and political views, have caused the demonstrations.
Not everyone wants to see President Morsi step down. Many people still support him and want him to stay as president for his full term of four years.
Supporters of the president also plan to hold their own rallies. The Egyptian army has warned it will step in if the protests get out of control.
2011 protests in Egypt
In January 2011, there were massive protests against Hosni Mubarak, who had been president of Egypt for 30 years. People unhappy with the way he was running the country protested for more than two weeks.
Hundreds of people were killed as violence broke out between protestors and people supporting the government.
Eventually, Mubarak announced he was stepping down and Egyptians then voted for a new leader in the country's first ever presidential elections.