The shirts, which bore a skull and crossbones symbol and the word 'Hardcore Rebels,' faded upon washing to reveal a hidden message: 'What happened to your shirt can happen to you. We can help you break with right-wing extremism.'
The T-shirts were the work of Exit Deutschland, a group that helps young people transition out of militant right-wing lifestyles.
'With these T-shirts we wanted to make ourselves known among right-wingers, especially amongst young ones who are not yet fully committed to the extreme right,' said Exit founder Bernd Wagner.
Right-wing extremists tricked by 'Trojan' T-shirts