It is often voiced by conservatives disheartened by the changes in the Catholic Church that Vatican II was a good council, but that it was misinterpreted. If these good people were better informed as to what took place at the Council, they would never say any such thing. Though Vatican II started with the best resolves, it was hijacked in the opening session by rebel bishops because the pope had planned the Council without their advice and against their designs.
We gather that Cardinal Tisserant, the key draftsman of the 1962 Moscow-Vatican Treaty who presided at the opening session, was part of this plot to usurp the Vatican Council. According to Jean Guitton, the famous French academic, Tisserant had showed him a painting of himself and six others, and told him, "This picture is historic, or rather, symbolic. It shows the meeting we had before the opening of the Council when we decided to block the first session by refusing to accept the tyrannical rules laid down by John XXIII." (Vatican II in the Dock, 2003)