REAL Free thinkers would let someone believe or not ....not condemn them for believing
I like to mention a sort of reverse Pascal's wager. You succeed in stamping out the Christian religion and you will be FORCED to practice the Muslim one.
There is no such thing as an "Atheist" Society, and the only thing possible is to change religions.
Muslims will not argue with them. Muslims will not listen to them. Muslims will not respect their right to disbelieve. Muslims will not go away. Muslims will kill them.
Christianity is about the only religion that will put up with them.
If Atheists were smart, they would at the very least shut up. If they were smarter yet, they would be doing everything of which they could think to boost Christianity.