Thousands of Tunisian supporters of ruling Islamist party Ennahda march along Habib Bourguiba Avenue during a demonstration to affirm their right to govern the country. Tunisia's ruling Ennahda party has called on supporters to rally Saturday and back its "legitimacy" even as the prime minister, who belongs to the Islamist party, scrambles to form a new government of technocrats. Tunis, TUNISIA - 16/02/2013