Now, we have James Martin. S.J., and Thomas Rosica, CSB., (respectively) tweeting and retweeting a painting which includes the vile, Mass-hating Martin Luther. How can Catholic priests take to such an evil man? How can they approve of such a blasphemous painting? Perhaps because they themselves are spiritual descendants of the arch-heretic, and are imbued with German protestant idealism, such as Schelling and Hegel via Heidegger to Karl Rahner? It should come as no surprise that Rosica's Salt and Light considers the Lutheran heretical sect, a "church".
From the Smalcald Articles by Martin Luther. Article II: Of the Mass:
That the Mass in the Papacy must be the greatest and most horrible abomination...it is but a pure invention of men...In addition to all this, this dragon's tail, [I mean] the Mass, has begotten a numerous vermin-brood of manifold idolatries....In short, the Mass itself and anything that proceeds from it, and anything that is attached to it, we cannot tolerate, but must condemn...
UPDATE: [12.20.2014] Luther advocated for adultery.