Mazdakism
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Mazdakism (Persian: مزدکیه) was an Iranian religion, which was an offshoot of Zoroastrianism.
The religion was founded in the early Sasanian Empire by Zaradust-e Khuragen, a Zoroastrian mobad who was a contemporary of Mani (d. 274). However, it is named after its most prominent advocate, Mazdak, who was a powerful and controversial figure during the reign of Emperor Kavad I (r. 498–531), until he was killed by Emperor Khusrau I (r. 531–579).