Music fans who took souvenir T-shirts from a rock festival in Gera, eastern Germany, have discovered they hold a secret message.
The so-called Trojan T-shirts bore a design of a skull and right-wing flags and the words "hardcore rebels".
But, once washed, the design dissolves to reveal a message telling people to break with extremism.
Some 250 T-shirts were donated to organisers, who handed them out at the nationalist rock festival in Gera.
The stunt was organised by a left-wing group called Exit, which seeks to reduce the influence of the right-wing in Germany.
Touching that the Exit people actually assumed neo-Nazis wash their clothes! (h/t RB)