For a group that has never taken part in political life, the religious conservative Salafi movement is now emerging as a new political force in Egypt. br br As they establish a platform based on Islam as a system of governance, however, many secular activists fear the emergence of a religious state following their country's ousting of long-term leader Hosni Mubarak. br br Al Jazeera's Zeina Khodr reports from Alexandria on the ideological battle to fill the vacuum left in the wake of Egypt's revolution.