If you're really interested in seeing things fron Fred's point of view he's a great (and long) article.
It was meant to be part of a book but the Phelps clan sued to get it stopped. The irony of it is, this portion of the book was then in the public record for everyone to read. (If I understand it right)
It's called "Addicted to Hate" and it covers Fred's
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"Cults," Sects, and "New Religious Movements"