I am Jewish, and I cannot even convey fully how outraged I am at this fascist arrogance.
The cathedrals and other marvels of architecture, the magnificent art, the music of Bach and Handel --- what inspired them if not Christianity? To deny this is simply outrageous.
They were not even asked to say that Christianity plays a significant role now. They were asked to acknowledge in the constitution, to wit, "the role that Christianity played in the history of Europe." It is in this context that Enlightenment is mentioned.
Manipulation of facts is what makes something propaganda. This denial of the fundamental role of Christianity in the formation and development of European nations and states qualifies as such. That is why I find it justifiable to call it fascist propaganda.