Dignitatis Humanae as such can not be a dogmatic pronouncement as it contradicts the dogmatic pronouncements in Quanta Cura.
All hail Pope HapaxLegamenon!
Thanks for clarifying that your holiness.
For everyone who has not made themselves their own Pope and judge of the Magisterium:
http://www.rtforum.org/lt/lt9.html
http://www.rtforum.org/lt/lt44.html