2009 Iranian presidential election protests

After incumbent president Mahmoud Ahmadinejad declared victory in the 2009 Iranian presidential election, protests broke out in major cities across Iran in support of opposition candidates Mir-Hossein Mousavi and Mehdi Karroubi. The protests continued until 2010, and were titled the Iranian Green Movement (Persian: جنبش سبز Jonbesh-e Sabz) by their proponents, reflecting Mousavi's campaign theme, and Persian Awakening, Persian Spring or Green Revolution.

Protests began on the night of 12 June 2009, following the announcement that incumbent President Mahmoud Ahmadinejad won nearly 63 percent of the vote, despite several reported irregularities. However, all three opposition candidates claimed the votes were manipulated and the election was rigged, with Rezaee and Mousavi lodging official complaints. Mousavi announced he "won't surrender to this manipulation", before lodging an official appeal against the result to the Guardian Council on 14 June. Ayatollah Ali Khamenei ordered an investigation into the claims of electoral fraud and irregularities, as requested by Green Movement leaders. Ahmadinejad called the election "completely free" and the outcome a "great victory" for Iran, dismissing the protests as akin to little more than "passions after a soccer match".

Due to the sporadic cases of violence present at the protests, the government had the police and paramilitary Basij violently suppress them; protesters were beaten, pepper sprayed, arrested and tortured, and even shot in some cases. The most widely known firearm victim was Neda Agha-Soltan, whose last moments were uploaded to YouTube and broadcast around the world. Opposition groups also reported thousands more were arrested and tortured in prisons around the country, with former inmates alleging mass rape of men, women, and children by the Islamic Revolutionary Guards in prisons such as Kahrizak and Evin. The Iranian government confirmed the deaths of 36 people during the protests, while unconfirmed reports by Mousavi supporters allege at least 72 deaths (over twice as many) in the three months following the election. They claimed relatives of the deceased were forced to sign documents citing death by heart attack or meningitis. Iranian authorities closed universities in Tehran, blocked websites, cut off mobile signals and banned rallies.

The creation of the Iranian Green Movement developed during these protests. It was also termed the "Twitter Revolution", due to protesters' reliance on Twitter and other social media to communicate.