Anabaptism is a Protestant Christian tradition focused on peaceful living and following Jesus (Britannica). Early leaders started the movement in 1525 in Zurich, Switzerland (Mennonite World Conference). It requires strict nonviolence and complete separation from government (Schleitheim Confession). Groups like Mennonites, Amish, Hutterites, and Church of the Brethren continue to practice adult baptism and simple living (Global Anabaptist Mennonite Encyclopedia Online).
