What are most unpopular religions?

Answer 1

If the question means which religions have the fewest adherents, there are many documented cases of idiodoxies, religions with only a single believer. An example, albeit a fictional one, can be found in the novel The Far Pavilions, in which a young man uses the distant mountains as his focus for God.

Answer 2

Satanism in the west, it used to be witchcraft.

In western cultures Satanism is most loathed and misunderstood even by its own practitioners. Just last night there was a parody involving skulls, murder and evil in a satanic "church" on public access tv where I live. And there have been a lot of murder convictions on the basis of its practice in the US and Eastern European countries.

As for witchcraft, hopefully enough people know the history of the multitudes of tribes of people slaughtered for practicing it, more if you include all demonized nature based religions. The Spanish Inquisition and the Salem witch trials are recent examples. So was the entire conquest of the Americas, and the entire period of colonialism and imperialism led by the powers of Western Europe.

Discrimination continues today in the United States, recently there was a labor department complaint about a person fired for being a witch in Massachusetts. The US Army has had some controversy, although they are making an effort to support practitioners. Prisons have also become more tolerant of the practice of witchcraft and paganism.

In developing nations a pervasive "burn the witch" mentality seems to continue to dominate even in areas where Christianity inst the majority religion. In Africa and India children and the elderly continue to be murdered for its supposed practice and in Iran and Saudi Arabia people continue to be arrested for its practice and in some cases put to death.

Answer 3

Jew is the most persecuted religion. It is one of the oldest and has withstood the Holocaust and many other wars throughout the millennia it has existed.