Original sentence: Members of the Bahá'í Faith, Iran's largest non-Islamic religious minority, are not recognized by the Iranian Constitution as an official religious minority and are seen as heretics by the Shia clergy, and as a result, have sometimes faced systematic persecution,, but are often tolerated
Edited sentence: Members of the Bahá'í Faith, Iran's largest non-Islamic religious minority, are not recognized by the Iranian Constitution as an official religious minority and are seen as heretics and have faced systematic persecution,, but are often tolerated