Oh, I can offer many citations of what BOTH JP II and Benedict did.  This cite doesn't allow for all of them to be shown.  I've done so in the past when we were on Discuss.  There are many other posters on this cite who have also added their ideas to this list.

I have also posted an extensive expose on Pope Benedict's negativistic attitudes on the Primacy of Conscience.  These rights were supported in Gaudium et spes in article 16 and in Dignitatis humanae article 3.  In sum of Ratzi's arguments he states that, yes, there is a primacy of conscience, BUT that even the 'simple faith' of the faithful requires defense by the pope from the destruction threatened by a subjectivity forgetful of its own foundation as well as by the pressures of social and cultural conformity."  This constrained view almost denies that the conscience is where the soul meets the divine.  

Joseph Ratzinger, "Conscience in Truth," in CRISIS OF CONSCIENCE, ed. John M. Haas [New York: Crossroad, 1996] p. 2.