Then, during the Crusades, there is the widespread slaughter of the Albegensians, who held to a dualistic rejection of all things material in order to achieve spiritual purity, and John Calvin who burned Servetus at the stake for denying the Trinity, and Zwingli who had several
Anabaptists drowned for their belief in getting rebaptized as adults.
For Luther, for instance, the error of the
Anabaptists was a capital offense: Those seeking a second baptism were to be put to death by
drowning.