good teaching.
As far as I know - no one who opposes some of the doctrines and some of the practices of the catholic church - claims that every thought/every-teaching given by a member of the catholic church has some sort of problem
Here are a few examples of things that are often brought up in that regard.
1. Placing the Bible on the "Index of forbidden books" Index Librorum Prohibitorum - (ended 1966)
2. The inquisition (in general - the idea of using force to gain or maintain membership)
3. Purgatory
4. The doctrine they call "Communion with the dead"
5. The claim that priests have the powers to "confect the body, blood, soul and divinity of Christ"
6. The change of the Sabbath
7. The use of images in worship where bowing down before them and promising to serve them -- "them being the being the image represents" -- in the case of non-God persons being venerated in that way - and even God Himself had no image of Himself in the sanctuary He designed for worship so then He would not allow us to do that even with an image of God.
8. The call for the "extermination" of heretics - which lead to violence
(NOTE: - The Catholic Popes ,engaged in opposing rival Catholic Popes, often used some of the same language/terms to describe their papal opponent as was later used by protesting-Catholics against some Popes)
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=== as for a few of the many problems with the inquisition - see the following Catholic document outlining some of those issues --
Pope Clement XIV in 1773 abolished the Jesuit order see Dominus ac Redemptor (1773)
jesuitportal.bc.edu
"Therefore we declare that all authority in both spiritual and temporal matters of the Father General, the provincials, the visitors, and of any other superiors of the said Society is
permanently discontinued and completely abolished."
In that document Pope Clement XIV lists some of the problems they were having with the Jesuit order, and one of those problems in the list was the poor treatment by Jesuits of people being tormented under the system of "Inquisition" - where the complaints were coming not merely from the victims but also other orders of priests who were not at all happy with what was going on.
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FORDHAM – (Jesuit)
"The Fourth Lateran Council, the council that dogmatized transubstantiation, offered indulgences to those who would "exterminate heretics" and participate in a Crusade. Since this council refers to the RCC's influence over the state (
John 19:11), it points to the fact that the state was acting at the command of the RCC. The council declared (
Internet History Sourcebooks Project
Internet History Sourcebooks Project
CANON 3
“Secular authorities, whatever office they may hold, shall be admonished and induced and if necessary compelled by ecclesiastical censure, that as they wish to be esteemed and numbered among the faithful, so for the defense of the faith they ought publicly to take an oath that they will strive in good faith and to the best of their
ability to exterminate in the territories subject to their jurisdiction all heretics pointed out by the Church; so that whenever anyone shall have assumed authority, whether spiritual or temporal, let him be bound to confirm this decree by oath. But if a temporal ruler, after having been requested and admonished by the Church, should neglect to cleanse his territory of this heretical foulness, let him be excommunicated by the metropolitan and the other bishops of the province. If he refuses to make satisfaction within a year, let the matter be made known to the supreme pontiff [the Pope], that he may declare the ruler's vassals absolved from their allegiance and may offer the territory to be ruled lay Catholics, who
on the extermination of the heretics may possess it without hindrance and preserve it in the purity of faith; the right, however, of the chief ruler is to be respected as long as he offers no obstacle in this matter and permits freedom of action. The same law is to be observed in regard to those
who have no chief rulers (that is, are independent). Catholics who have girded themselves with the cross for the extermination of the heretics, shall enjoy the indulgences and privileges granted to those who go in defense of the Holy Land."