Khurramites

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

The Qizilbash ("Red-Heads") of the 16th century – a religious and political movement in Iranian Azerbaijan that helped to establish the Safavid dynasty – were reportedly the "spiritual descendants of the Khurramites".