Cults have a history as long as history has been recorded, but there has been remarkably enhanced concern about them more recently. In the 1970s at least two noteworthy whistle-blowers called attention to the rapidly expanding adversity of cults.
One was Margaret Thaler Singer, Ph.D., a psychologist,
and the other was John G. Clark, M.D., a psychiatrist. Their
writings (Singer, 1979; Clark, 1979) sounded an alarm.
They suggested that harm, which consists of physical and
psychological constraint and manipulation, refusal to let
adherents leave, depletion of adherent’s funds and assets,
denial of competent treatment for illness, and even plain and
simple wasting of adherents’ time, had been widely noted as
a consequence of destructive cult involvement. Such harm is
now clearly perceived by a significant segment of the
population, but widespread awareness of the extent of
destructive cultic harm is not yet incorporated into the American culture.