The March 18 attack on the Bardo national museum in Tunis killed 21 foreign tourists and a policeman, shaking a country that has been praised as a peaceful democratic model since leading the first of the Arab Spring uprisings in 2011.
A red-and-white sea of Tunisian crescent and star flags filled a major boulevard in the capital where several world leaders, including French President Francois Hollande, came to rally under the slogan "Le Monde est Bardo" (The World is Bardo).