Hus's death sparked the Hussite Wars, decades of religious warfare. Sigismund, the pro-papal king of Hungary and successor to the Bohemian throne after the death of Wenceslas in 1419, failed repeatedly to gain control of the kingdom despite aid by Hungarian and German armies. Riots broke out in Prague. Led by a Czech yeoman, Jan Žižka, the Taborites streamed into the capital. Religious strife pervaded the entire kingdom and was particularly intense in the German-dominated towns. Hussite Czechs and Catholic Germans turned on each other; many were massacred, and many German survivors fled or were exiled to the rest of the Holy Roman Empire. Emperor Sigismund led or instigated various crusades against Bohemia with the support of Hungarians and Bohemian Catholics.