In which John Green examines the question of whether President Barack Obama is a Muslim in the wake of a recent opinion poll showing that more than one fifth of Americans believe Obama is a Muslim. Along the way, the five pillars of Islam are discussed: belief in the unity of God and the prophethood of Muhammad (shahada), prayer (salat), alms-giving (zakat), fasting (sawm), and pilgrimage (hajj). Thanks to Valerie, Ryan, Sierra, Esther, and Geri for research assistance is compiling this video.