Here you can study some of the Baha’i critic:
1-Stan McGlynn, an artist, theologian, knowledgeable writer, researcher, and Baha’i critic, left the Baha’i Faith after 31 years of active membership in the Baha’i administration
2-Ibrahim Kheiralla, a Baha’i critic, turned away from ‘Abdu’l-Bahá after 10 years of activity and promotion of the Baha’i Faith due to his critical stance towards ‘Abdu’l-Bahá. His son, George, also converted to Islam in 1930 and became active in the Islamic community of New York.
3-Denis Martin MacEoin, a novelist, literary critic, and researcher in Islamic studies, became a dissenter and critic after 15 years of active membership in the Baha’i administration and writing numerous books and articles about the Baha’i Faith, eventually leaving the Baha’i Faith.