Throughout Jehovah's Witnesses' history, their beliefs, doctrines, and practices have engendered controversy and opposition from local governments, communities, and religious groups.
Many Christian denominations consider the interpretations and doctrines of Jehovah's Witnesses to be heretical. Some religious leaders have accused Jehovah's Witnesses of being a cult. According to law professor Archibald Cox, in the United States, Jehovah's Witnesses were "the principal victims of religious persecution … they began to attract attention and provoke repression in the 1930s, when their proselytizing and numbers rapidly increased."
Political and religious animosity against Jehovah's Witnesses has at times led to mob action and government oppression in various countries, including Cuba, the United States, Canada, Singapore, and Nazi Germany. The denomination's doctrine of political neutrality has led to imprisonment of members who refused conscription (for example in Britain during World War II and afterwards during the period of compulsory national service).
During the World Wars, Jehovah's Witnesses were targeted in the United States, Canada, and many other countries for their refusal to serve in the military or help with war efforts. In Canada, Jehovah's Witnesses were interned in camps along with political dissidents and people of Japanese and Chinese descent. Activities of Jehovah's Witnesses have previously been banned in the Soviet Union and in Spain, partly due to their refusal to perform military service. Their religious activities are currently banned or restricted in some countries, for example in Singapore, China, Vietnam, Russia and many Islamic states.