On this Day, in 1419: the First Defenestration of Prague

Six hundred years ago, an angry crowd stormed Prague’s New Town Hall and threw several royal councillors from its windows. The attack, known as the First Defenestration of Prague, took place on July 30, 1419, and is widely regarded as the event that ignited the Hussite Wars—a conflict that transformed medieval Bohemia and left a lasting mark on Czech history. Yet the violence that unfolded that summer day had been years in the making.

Its roots lay in the teachings of Jan Hus, a Czech theologian, university lecturer, and religious reformer who became one of the most influential figures of the late Middle Ages. Hus openly criticized corruption within the Catholic Church, particularly the sale of indulgences and the growing power of the church hierarchy. Rather than viewing the Church as an institution led by the pope and bishops, he argued that the true Church was the community of faithful believers.

Summoned before the Council of Constance in 1415 to defend his beliefs, Hus was arrested despite receiving a promise of safe conduct. After refusing to renounce his teachings, he was convicted of heresy and burned at the stake. While members of the nobility saw it as the unjust killing of one of the kingdom’s own, Hus’s followers spread his ideas far beyond Prague through a network of priests and former university students.

The capital, home to Charles University and the Bethlehem Chapel where Hus had preached, became the center of a rapidly growing reform movement. Bohemia’s political circumstances also allowed the movement to flourish. Neither King Wenceslas IV nor the Archbishop of Prague took decisive action to suppress it, allowing religious tensions to deepen over the following years.

By the summer of 1419, the situation had reached a breaking point. On July 30, radical Hussite preacher Jan Želivský led a religious procession through Prague after delivering an impassioned sermon. Although the march may have appeared spontaneous, historians believe the confrontation had been carefully prepared.

Some participants reportedly arrived carrying concealed weapons, expecting violence. The procession made its way to Prague’s New Town Hall, demanding the release of Hussite supporters imprisoned there. When the councillors refused, the crowd forced its way in…