Let's not beat around the bus here: we're going to have atheist bus ads in Toronto, Canada. It's being called a 'campaign' and it's definitely a peaceful crusade. That's if you call trying to deconvert people 'peaceful', mind you.
I do like, however, how the Erasmus of the article bears the same name as the Catholic Christian, Erasmus, of the 16th century. It's a delicious -- even if pedantic and meaningless -- historical irony.