Seems like it is fair game to criticize Christianity. It is very popular with the so called intellectuals to condemn Christianity. Maybe it is because of their nature "to turn the other cheek?"

Other religions threaten people with violence and be headings if you mock their "god."
It is very easy to be a bully when the people they "bully" do not retaliate.

Christians have a long history of violence against them. Remember the lions eating them for the Roman's entertainment?
I think that violent religions will definitely run their coarse when people get tired of the BS.