Khurramites

The Khurramites (Persian: خرمدینانKhurram-Dīnân, meaning "those of the Joyful Religion") were an Iranian religious and political movement with roots in the Zoroastrian movement of Mazdakism. An alternative name for the movement is the Muhammira (Arabic: محمرة, "Red-Wearing Ones"; in Persian: سرخ‌جامگانSurkh-Jâmagân), a reference to their symbolic red dress.