Oh, no Ken! I'm talking about Catharism, which also known as the Albigensian Heresy, which it developed in the Languedoc. The cathars got to be very powerful since several nobles had joined to them, what it seems to have annoyed to Rome, so the pope organized a crusade against them. The cathar faith was quite different of the catholicism as were also their sacraments, the reincarnation was among their beliefs, -Do you know anyone who believes in reincarnation? :) -
The case was that those people were hated by the catholic church, so they were persecuted