United Kingdom: Steve "Birdshit" Green has complained about the atheist bus ad to the Advertising Standards Authority. His cause for complaint? they break rules on substantiation and truthfulness
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Given his previous success in speeding up the repeal of the blasphemy laws, we will no doubt see a reintroduction of the ban on religious advertising any day now.
'No God' campaign draws complaint—BBC News, 8th January 2009.
Update: It gets funnier.

Funny, I always thought he was: "Dogshit".
... and I note that your tag for him uses that label too.
Why is this, is birdshit somehow more polite than dog-poo?
Or is it fear of emulating "Viz"?
The moniker was changed after this incident.