Shunning

Shunning is the rejection of a person. It is usual in some religious groups to cut people off if they do not believe the beliefs or follow the rules of the group. It has been used in industrial action (strikes) and as a punishment in certain societies.
Tax implications.
In many countries, religions get huge financial advantages by being recognised as religions. They are not taxed, or have much reduced taxes. In the United States, the Establishment Clause of the US Constitution prevents the US government and (through the Bill of Rights) the 50 state governments from imposing church taxes. In 1947, the US Supreme Court ruled that "No tax in any amount, large or small, can be levied to support any religious activities or institutions, whatever they may be called, or whatever form they may adopt to teach or practice religion." This explains why organisations such as Scientology wish to be classified as religions.