In Australia they had a competition to make the best anti-religion ads:
From the description:
‘The Pitch’ is a segment on ABC TV’s ‘The Gruen Transfer’ where two ad companies compete to ‘sell the unsellable’. Past example of selling the unsellable include invading New Zealand, compulsory? euthanasia for the elderly, cosmetic surgery for children and introducing a parent licence.
This week, the two companies have to sell the idea of ‘banning all religion’.