They took over a city square -- and in 18 days, they brought down a regime. Shot in the center of Egypt's Tahrir Square from the beginning of the battles to the climax of the celebration, In Tahrir Square: 18 Days of Egypt's Unfinished Revolution brings viewers into the streets of Cairo to share the sights, sounds and passion of a modern day revolution. On January 25, 2011, thousands of Egyptians began gathering in Cairo's Tahrir Square to peacefully demand the end to President Hosni Mubarak's 30-year rule. Bolstered by similar protests in other Arab countries and mobilized in part by social media, Egyptians from all walks of life and every social class took over Tahrir Square for 18 days -- eventually leading to a jubilant celebration on February 11, when it was announced that Mubarak would finally step down.