Wikipedia
Anti-Protestantism is bias, hatred or distrust against some or all branches of Protestantism and its followers.
It dates back time to a time long before the Protestant Reformation itself, as various pre-Protestant groups such as Arnoldists, Waldensians, Hussites and Lollards were persecuted in the Roman Catholic Europe. Protestants were not tolerated throughout most of Europe until the Peace of Augsburg of 1555 approved Lutheranism as an alternative for Roman Catholicism to become a state religion of various states within the Holy Roman Empire of the German Nation. The Reformed faith was not recognized until the Peace of Westphalia of 1648. Other states, such as France, made similar agreements in the early stages of the Reformation. Poland-Lithuania had a long history of religious tolerance. However, the tolerance stopped after the Thirty Years' War in Germany, the persecution of Huguenots and the French Wars of Religion in France, switch of power between Protestant and Roman Catholic rulers after the death of Henry VIII of England in England, the launch of the Counter-Reformation in Italy, Spain, Habsburg Austria and Poland-Lithuania. Anabaptism arose as a part of the Radical Reformation, lacking support of the state Lutheranism and Calvinism enjoyed, and thus was persecuted. Theological disagreement initially led to a Lutheran-Reformed rivalry in the Reformation.
Protestantism in Latin America was largely ostracized until the abolishment of certain restrictions in the 20th century. It spreads with Evangelicalism and Pentecostalism gaining the majority of followers. North America became a shelter for Protestants who were fleeing Europe after the persecution increased.
Persecution of Protestants in Asia can be put under a common shild of the persecution Christians in the Middle East and northern Africa, dominated by Islam is also a part of this phenomenon.