I will admit that the first few times I sped past these posters, I didn't get it.

But then, this particular poster stuck in my mind after I spotted it at a bus stop in Copenhagen. Reverse psychology at its best - what would the world be like if Nelson Mandela had kept his mouth shut? Campaign created by UNCLE Grey A/S Denmark.

Per Pedersen : Creative Director
Jesper Hansen : Art Director
Michael Paterson : Copywriter