Original sentence: At various times NOI miniters have criticized Christian theology, and many have referred to the Pope as a "cracker".Some Christian leaders and Churches, particularly black clergy and black congregations throughout America have a history of close relations with the Nation of Islam, including Rev.The NOI has criticized Christianity insofar has it has been a tool for the enslavement and oppression of black people
Edited sentence: At various times NOI miniters have mocked Christian theology, and many have referred to the Pope as a "cracker".In contrast, many American Christians, both black and white, refer to the Nation of Islam as an anti-Christian group.Some Christian leaders and Churches—particularly black clergy and black congregations— throughout America have a history of close relations with the Nation of Islam, including Rev.The NOI has criticized Christianity insofar has it has been a tool for the  enslavement and oppression of black people