Original sentence: Negative attitudes towards Dhimmis existed  partly due to the "normal" feelings of a dominant group towards subject groups, partly due to the contempt Muslims have for those who they perceive have willfully chosen to refuse to accept the truth (convert to Islam) while the opportunity to do so exists; and partly due to certain specific prejudices and humiliations
Edited sentence: Negative attitudes towards Dhimmis existed  partly due to the "normal" feelings of a dominant group towards subject groups (which exists in virtually any society), partly due to the contempt Muslims have for those who they perceive have willfully chosen to refuse to accept the truth (convert to Islam) while the opportunity to do so exists; and partly due to certain specific prejudices and humiliations