The presidential election in Turkey is now less than a month away. Opposition candidate Kemal Kilicdaroglu is hoping to unseat Recep Tayyip Erdogan and polls show the 74-year-old is expected to win a majority of votes in the first round on May 14. In a video that has gone viral, Kilicdaroglu announced he was an Alevi, a member of Turkey's main religious minority. Alevis are Muslims but are considered heretics by some Sunni hardliners. We take a closer look.