The Catholic Reformation or the Counter Reformation was a strong reaffirmation of the doctrine and structure of the Catholic Church, climaxing at the Council of Trent, partly in reaction to the growth of Protestantism. Even before the posting of Martin Luther's Ninety-Five Theses in 1517, there had been evidence of internal reform within the Church, combating trends that heightened radical demands to fundamentally alter the doctrine and structure of the Medieval Church and even contributed to the anticlericalism of figures such as John Huss and John Wycliffe in the late fourteenth century. The Catholic Reformation, aimed at correcting the sources of the Reformation, and pronounced since the pontificate of Pope Paul III, was both retaliatory, committed to protecting Catholic institutions an