Arab Spring was a series of protests and uprisings against the governments that spread across large parts of the Arab world in the early 2010s. (i.e. December 2010 to December 2012). It began with protests in Tunisia and spread quickly to other countries like Libya, Egypt, Yemen, Syria and Bahrain. There were riots, civil wars and the main slogan of protestors was "the people want to bring down the regime".
There were sustained street demonstrations in Iraq, Algeria, Morocco, Jordan, Lebanon, etc.
The social media i.e. facebook, etc. was the driving force behind the swift spread of the revolutions. The results of these movements were that regimes of Tunisia (Abidine Ben Ali), Egypt (Hosni Mubarak) Libya (Gaddafi), Yemen (Abdullah Saleh) were ousted while in Syria, Iraq, etc., a full scale civil war resulted. Only in Tunisia, there was a transition to constitutional democratic government.