An entire generation of Egyptians had never known a time when Hosni Mubarak was not their President. After 30 years in the top spot, Mubarak received his first serious challenge on Jan. 25, 2011, when more than a million protesters, fueled by political unrest, massive unemployment and social-media organization, assembled in Tahrir (Liberation) Square. For the next two weeks they held their ground as pro-Mubarak forces attacked them with rocks, tear gas and even a camel cavalry charge. Journalists continued to broadcast despite the assaults, and the world watched as Egyptian soldiers occupied the square. But rather than fire on their fellow countrymen, they kept the two sides at bay until Mubarak finally stepped down on Feb. 11.