The fact is that the Catholic church has tortured and murdered more people than any other institution on the face of this earth since the beginning of Creation. Add to that, they are also the Antichrist/Beast/Little Horn/Man of Sin, power.
http://www.alphanewsdaily.com/Number-of-Protestants-Killed-By-Popes.html
“That the Church of Rome has shed more innocent blood than any other institution that has ever existed among mankind, will be questioned by no Protestant who has a competent knowledge of history. The memorials, indeed, of many of her persecutions are now so scanty, that it is impossible to form a complete conception of the multitude of her victims, and it is quite certain that no power of imagination can adequately realize their sufferings.” — “History of the Rise and Influence of the Spirit of Rationalism in Europe,” Vol. II, p. 32. London: Longmans, Green, and Co., 1910.