There is nothing to Justify...your history is biased and inaccurate. You are baiting a question about the inquisition, which was nothing more than investigation of heresies...the abuses were done by civil governments and were in fact stopped by papal threat of excommunication if the civil authorites continued.

Personally, I don't think it justifiable, and consider them to have been the true heretics persecuting the true Christians like the anabaptists. At any rate, here's the excuses on a hard-core Catholic site for how they justify it: from this page (section VI): http://www.newadvent.org/cathen/07256b.htm#REF_IV "Heresy, in the sense of falling away from the Faith, became possible only after the Faith had been promulgated by Christ. Its advent is clearly foretold, Matt., xxiv, 11, 23-26: " . . . many false prophets shall rise. and shall seduce many. . . . Then if any man shall say to you: Lo here is Christ, or there, do not believe him. For there shall rise false Christs and false prophets, and shall show great signs and wonders, insomuch as to deceive (if possible) even the elect. Behold I have told it to you, beforehand. If therefore they shall say to you: Behold he is in the desert, go ye not out: Behold he is in the closets, believe it not. "Christ also indicated the marks by which to know the false prophets: "Who is not with me is against me" (Luke 11:23); "and if he will not hear the Church let him be to thee as the heathen and the publican" (Matthew 18:17); "he that believeth not shall be condemned" (Mark 16:16). The Apostles acted upon their Master's directions. All the weight of their own Divine faith and mission is brought to bear upon innovators. "If any one", says St. Paul, "preach to you a gospel, besides that you have received, let him be anathema" (Galatians 1:9). To St. John the heretic is a seducer, an antichrist, a man who dissolves Christ (1 John 4:3; 2 John 7); "receive him not into the house nor say to him, God speed you" (II John, 10). St. Peter, true to his office and to his impetuous nature, assails them as with a two-edged sword: " . . . lying teachers who shall bring in sects of perdition, and deny the Lord who bought them: bringing upon themselves swift destruction . . . These are fountains without water, and clouds tossed with whirlwinds, to whom the mist of darkness is reserved" (2 Peter 2:1, 17). St. Jude speaks in a similar strain throughout his whole epistle. St. Paul admonishes the disturbers of the unity of faith at Corinth that "the weapons of our warfare . . . are mighty to God unto the pulling down of fortifications, destroying counsels, and every height that exalteth itself against the knowledge of God . . . and having in readiness to revenge all disobedience" (2 Corinthians 10:4, 5, 6). What Paul did at Corinth he enjoins to be done by every bishop in his own church. Thus Timothy is instructed to "war in them a good warfare, having faith and a good conscience, which some rejecting have made shipwreck concerning the faith. Of whom is Hymeneus and Alexander, whom I have delivered up to Satan, that they may learn not to blaspheme" (1 Timothy 1:18-20). He exhorts the ancients of the Church at Ephesus to "take heed to yourselves, and to the whole flock, wherein the Holy Ghost hath placed you bishops, to rule the Church of God, . . . I know that, after my departure, ravening wolves will enter in among you, not sparing the flock . . . Therefore watch, . . ." (Acts, xx. 28, 29, :31). "Beware of dogs", he writes to the Philippians (iii, 2), the dogs being the same false teachers as the "ravening wolves". The Fathers show no more leniency to perverters of the faith. A Protestant writer thus sketches their teaching (Schaff-Herzog, s. v. Heresy): "Polycarp regarded Marcion as the first-born of the Devil. Ignatius sees in heretics poisonous plants, or animals in human form. Justin and Tertullian condemn their errors as inspirations of the Evil One; Theophilus compares them to barren and rocky islands on which ships are wrecked; and Origen says, that as pirates place lights on cliffs to allure and destroy vessels in quest of refuge, so the Prince of this world lights the fires of false knowledge in order to destroy men. [Jerome calls the congregations of the heretics synagogues of Satan (Ep. 123), and says their communion is to be avoided like that of vipers and scorpions (Ep. 130).]" These primitive views on heresy have been faithfully transmitted and acted on by the Church in subsequent ages. There is no break in the tradition from St. Peter to Pius X." ========================================================================================================Note that at the end of the 1st paragraph they WAY take the 2 Corinthians verses out of context. They deliberately skip verse 3 completly where Paul says we don't war after the flesh, and around v. 4 that say the weapons of their warfare AREN'T physical. Then they completely avoid the parts of v. 5 about it being their own thoughts that are being avenged, not what other people do. Try comparing their clever little quotes with the actual thing to see if the Bible does back them in using force to hurt "heretics": CATHOLICS TRYING TO SUPPORT HURTING HERETICS: "St. Paul admonishes the disturbers of the unity of faith at Corinth that "the weapons of our warfare . . . are mighty to God unto the pulling down of fortifications, destroying counsels, and every height that exalteth itself against the knowledge of God . . . and having in readiness to revenge all disobedience" (2 Corinthians 10:4, 5, 6)." THE ACTUAL BIBLE VERSES: 2 Corinthians 10:3 For though we walk in the flesh, we do not war after the flesh: 4 (For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;) 5 Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ; 6 And having in a readiness to revenge all disobedience, when your obedience is fulfilled. NOTE-To see what the Bible really says about harming others, see Matthew 5:38-50; Romans 12:17-21, and Romans 3:8 ======================================================================================================== Observe the last paragraph of the page, which says: "The Church's legislation on heresy and heretics is often reproached with cruelty and intolerance. Intolerant it is: in fact its raison d'être is intolerance of doctrines subversive of the faith. But such intolerance is essential to all that is, or moves, or lives, for tolerance of destructive elements within the organism amounts to suicide. Heretical sects are subject to the same law: they live or die in the measure they apply or neglect it. The charge of cruelty is also easy to meet. All repressive measures cause suffering or inconvenience of some sort: it is their nature. But they are not therefore cruel. The father who chastises his guilty son is just and may be tender-hearted. Cruelty only comes in where the punishment exceeds the requirements of the case. Opponents say: Precisely; the rigours of the Inquisition violated all humane feelings. We answer: they offend the feelings of later ages in which there is less regard for the purity of faith; but they did not antagonize the feelings of their own time, when heresy was looked on as more malignant than treason. In proof of which it suffices to remark that the inquisitors only renounced on the guilt of the accused and then handed him over to the secular power to be dealt with according to the laws framed by emperors and kings. Medieval people found no fault with the system, in fact heretics had been burned by the populace centuries before the Inquisition became a regular institution. And whenever heretics gained the upper hand, they were never slow in applying the same laws: so the Huguenots in France, the Hussites in Bohemia, the Calvinists in Geneva, the Elizabethan statesmen and the Puritans in England. Toleration came in only when faith went out; lenient measures were resorted to only where the power to apply more severe measures was wanting. The embers of the Kulturkampf in Germany still smoulder; the separation and confiscation laws and the ostracism of Catholics in France are the scandal of the day. Christ said: "Do not think that I came to send peace upon earth: I came not to send peace, but a sword" (Matthew 10:34). The history of heresy verifies this prediction and shows, moreover, that the greater number of the victims of the sword is on the side of the faithful adherents of the one Church founded by Christ (see INQUISITION)." Personally, I'm not sure whether I find it more amusing or disturbing that they liken the Inquisition to a "loving father chastening his son." *rolls eyes*