Nothing. Christianity is probably the safest belief system/institution/creed to bash in this world and fear no consequences.
In a way, Christianity is a victim of its own success. The revolutionary idea behind "turn the other cheek" transformed the systems that internalized this belief system so much that they have become vulnerable to attacks from those that have nothing but contempt for its values.
Here's an awesome article on the modern politics of TOLERANCE and the collision between culture and religion:
http://www.nationalreview.com/articl...jonah-goldberg