From: J A on
Some of the original American colonies were set up with the purpose of
having one particluar version of religion in charge, and they persecuted
people of other religions. A number of Quakers were put to death in
Massachucets just for practicing Quakerism. There was religious freedom for
the particular cult in charge, but not for any other cults.

The type of legal and political rule these religious cults created in the
early colonies can be seen in the Salem witch trials, in which people were
imprisoned and executed for being "witches", on the "evidence" given by
hysterical girls, and neighbors with grudges and suspicions of unapproved of
supernatural activities (withchery).

The people who wrote the US Constitution had this history on their minds,
along with the problems that religion and religious involvement in
government, had created in Europe.

This phenomenon of rumor mongering, of neighbors informing on neighbors,
motivated by grudges, favor seeking with authorities, or fear and ignorance,
was also very prevalent in Stalin's Soviet Union and Hiler's Germany. If
created a level of fear and suspicion that was very corrosive to a healthy
society.

"Religion" is dangerous and at the very least, should be kept be kept widely
separate from the powers of government, police and military.