The problem lies in how judges apply the legal principle of "the best interests of the child," a standard that a number of courts believe includes the child's spiritual development.
In the case of Rachel Bevilacqua, her sin was participating in gatherings of the Church of the Subgenius, a pop art parody of conformist religion. One of its key sayings, in fact, is "f*ck 'em if they can't take a joke."
Well, the judge in this case didn't laugh. When he found out about Rachel's participation in Subgenius activities, he embarked on a lengthy inquisition as to what exactly Rachel found funny. As is evident from this partial transcript, he saw her involvement with the Church as a sign that her professed belief in Christianity was a lie--and that she was actually participating in a satanic sex ritual.
The court particularly objected to Rachel's performances at X-Day, an annual gathering that marks the prophesied end of the world in 1998. The pendant above is the X-Day symbol, which makes parodic references to the year 1998, doom (but whose?), the inversion of the infinite, the ancient swastika and the surrealist pipe of Subgenius icon J.R. "Bob" Dobbs.
Because of her connection to the Church of the Subgenius, the judge removed Rachel's son from her custody and ordered both her and her husband to undergo psychological testing.