The anniversary of the Islamic revolution has traditionally been greeted with mass celebrations by Iranians congregating around the Azadi or Freedom Tower in Tehran. However, the government's celebrations are set to be marred by protesters calling for increased accountability and representation.
While the government attempts to demonstrate its strength to the outside world in light of pressure over its nuclear program, principally through rocket launches  and enhancing uranium enrichment - ostensibly for the production of medical isotopes  - they face a renewed bout of domestic dissent.
The trajectory of the revolution has been fiercely contested since power was initially seized from the Shah by a heterogeneous mix of Marxist, nationalist, religious and secular movements but the months following the disputed elections in June 2009 have arguably produced the most severe and violent clashes witnessed since 1979.
There have been moments of unrest from marginalised ethnic groups and student movements in Iran, but they lacked the broad support base that the "Green movement"  appears to generate. The movement's followers come from a mix of social and ethnic strata and resultantly is not restricted to rich, Westernised northern Tehranis. Moreover, they are increasingly hard for the regime to handle with their use of digital media . While the mix of individuals is perhaps a new challenge to the Islamic Republic, their message is not.
Iran has arguably fulfilled two thirds of its revolutionary demands: "Independence, Freedom and the Islamic Republic", however the call for freedom remains unfulfilled and it is this that maintains the demonstrations. Hamid Dabashi makes a similar point :
The history and the political culture of revolt against tyranny actually predate the Islamic revolution of 1977-1979. The young Iranians pouring into the streets of their homeland in recent months to demand their civil liberties are nourished and inspired by the same fountain of liberty that moved their parents in the years leading up to the 1979 revolution. ...What we are witnessing in the streets of Iran and among Iranians around the globe is the resurgence of a vibrant political culture that gave rise to the 1979 revolution.
The majority of demonstrators will not be calling for the overthrow of the Islamic Republic but for the accountability and representation they have been denied through electoral irregularities and the government's brute displays of force. Even those who have chanted "Death to Khamenei" are not calling for a revolution but wish to display their dismay at the violence they have observed.
Yasaman Baji , an Iranian reporter based in Iran, details a conversation she had with one such supporter:
"I don't agree with this slogan but I shouted it along with the crowd," he said. "We were angry. How else can empty-handed people respond to the violence that is directed at them?"
The nominal leaders of the Green Movement have called for non-violent demonstrations to mark the anniversary of the revolution but have also emphasised that the struggle is with despotism, not the Islamic Republic. Amidst rumours of conciliatory gestures between leaders of competing factions, Mr. Moussavi said in an interview  on his website Kaleme.org : "Dictatorship in the name of religion is the worst kind. The most evident manifestation of a continued tyrannical attitude is the abuse of parliament and the judiciary. We have completely lost hope in the judiciary."