because the religion defends the present slave order of the rich , who they want to overthrown from the power and take their state and change it. you gotta understand , that there is a narrative especially among protestants that goes like. if you are poor, you are a sinner and god hate you. that's why you are poor, coz you do not believe in god. that's why they were bunring churches and weee against religion. the priests were with the monarch and for the slavery.
Pirate