History of Jehovah's Witnesses
Jehovah's Witnesses originated as a branch of the Bible Student movement, which developed in the United States in the 1870s among followers of Christian Restorationist minister Charles Taze Russell. Bible Student missionaries were sent to England in 1881 and the first overseas branch was opened in London in 1900. The group took on the name International Bible Students Association and by 1914 it was also active in Canada, Germany, Australia and other countries. The movement split into several rival organizations after Russell's death in 1916, with one—led by Russell's successor, Joseph "Judge" Rutherford—retaining control of both his magazine, "The Watch Tower", and his legal and publishing corporation, the Watch Tower Bible and Tract Society of Pennsylvania.
Jehovah's Witnesses and governments
Many United States Supreme Court cases involving Jehovah's Witnesses have shaped First Amendment law. Significant cases affirmed rights such as these: 
By 1988, the U.S. Supreme Court had reviewed 71 cases involving Jehovah's Witnesses as an organization, two-thirds of which were decided in their favor. In 2002, the Watchtower Bible and Tract Society disputed an ordinance in Stratton, Ohio that required a permit in order to preach from door to door. The Supreme Court decided in favor of the Witnesses.