(CNN)Here is a look at Arab Spring, anti-government protests that began in Tunisia in December 2010 and spread throughout the Middle East and Africa in 2011.
January 4, 2011 - Protests begin, sparked by an increase in food prices.
January 9, 2011 - Within the span of a week, three people are killed and 300 others are injured during riots.
January 22, 2011 - Demonstrators defy a government ban on street protests and march in the city of Algiers. Nine people are arrested and 19 are injured, including eight police officers. The people participating in the protest call for the government to release detainees and lift a state of emergency that dates back to 1992.
February 25, 2011 - The government ends the state of emergency, lifting restrictions on freedom of speech and assembly.
February 14, 2011 - During a street protest in the village of Daih, a demonstrator is shot by police and dies the following day.
February 15, 2011 - Thousands of demonstrators gain control of the Pearl Square roundabout in Manama.
February 17, 2011 - In the early morning hours, riot police move into the Pearl Square area and disperse the crowd. Several people are killed.
February 19, 2011 - On the order of the government, security forces withdraw from Pearl Square. Protesters retake the area.
February 26, 2011 - Opposition leader Hassan Mushaimaa returns from exile.
March 14, 2011 - Saudi Arabia and the United Arab Emirates send in military troops under the banner of the Gulf Cooperation Council.
March 18, 2011 - Security forces demolish the Pearl Monument amid arrests of prominent opposition figures.
June 1, 2011 - The government lifts the emergency laws imposed on March 15.
June 13, 2011 - The trial of 47 doctors and nurses begins in Manama. They are accused of taking control of a hospital during protests.
August 8, 2011 - More than 140 political detainees are released, including two former members of Parliament.
September 1, 2011 - Thousands of demonstrators take to the streets to protest the death of a 14-year-old boy, allegedly killed by riot police.
September 17, 2011 - Tens of thousands of people protest following the funeral of a man who died in questionable circumstances. He allegedly died following a tear gas attack on his father's home. The government maintains he died of sickle cell anemia.
September 29, 2011 - Twenty doctors are convicted of trying to overthrow the government and are sentenced to prison terms ranging from five to 15 years.
November 23, 2011 - An independent commission set up by the king concludes that Bahrain's police used excessive force and torture against civilians in the crackdown against protesters. Days after the report is released, the king says the country will establish a committee to carry out the reforms recommended by the co