Anticultism refers to the ideology or practice of opposing cults or religious groups. Synonyms for this word include anti-cultism, anti- sectarianism, anti- religious fundamentalism, and anti-extremism. These words all imply a resistance to any form of extremist or dogmatic belief system that threatens individual freedom or promotes harmful values. People who oppose cults or extremist groups often do so based on concerns about the welfare of members, including risks of physical or psychological harm and isolation from family and community. While many religious practices and organizations are benign and provide important social support, anticultist movements focus on rooting out groups that violate basic human rights or espouse harmful, intolerant beliefs.