Tunis , Tunisia ( CNN ) Thousands of demonstrators marched in Tunisia 's capital Sunday , protesting against terrorism less than two weeks after gunmen attacked a museum and killed more than 20 people there . `` We came to express our support and to fight this danger that 's threatening our society and our stability , '' said Rafik Abdessalem , Tunisia 's former foreign minister , who was among the crowd . `` Fortunately , all Tunisians are united here today . We will be able to defeat terrorism , which is threatening Tunisia and all the neighboring countries . '' As a heavy police presence stood guard , Tunisian President Beji Caid Essebsi marched alongside dignitaries and world leaders , including French President Francois Hollande and Italian Prime Minister Matteo Renzi , who led the crowd to the steps of the Bardo Museum . Protesters held banners that said `` We are not afraid '' and `` Je suis Bardo '' as they chanted `` Tunisia is free , and out with terrorism . '' On March 18 , the art , culture and history museum was the site of a drastically different scene , as gunmen opened fire on tourists in a siege that also forced the evacuation of the neighboring Parliament . ISIS claimed responsibility for the attack in an audio message posted online the next day . Hours before Sunday 's demonstration began , Tunisia 's Prime Minister announced that Algerian national Khaled Shayeb , the alleged architect of the museum assault , was one of nine suspected militants killed in a raid in the south of the country . Arab Spring aftermath : Revolutions give way to violence , more unrest . CNN 's Catherine E. Shoichet contributed to this report .
protesters participated in a protest against terrorism in turkey 's capital . protesters hold statements that say ` ` We are not afraid '' and ` ` Je suis Bardo '' turkey 's Prime Minister says a participant in the Bardo museum attack was killed in a shootout .