This report from the FBI on the cult issue is well researched and a good example of sound reactions from authorities to potential problems cult can represent for the community. It rightly warns against two of the most damaging anticult myths, the Brainwashing and the Con myths, and gives an example of mature handling from authorities through conciliation rather than confrontation - the later approach being a key factor in what helped to bring about Jonestown, Waco and the Heaven Gates tragedies.
http://bernie.cncfamily.com/sc/fbi_report.htm