What do you do when neo-Nazis keep flooding your town?

One German city was faced with exactly that problem.

A viral post on Twitter from Cleve Jones shares the story of Wunsiedel in northeast Bavaria, which has been a neo-Nazi destination since it was once home to the grave of Adolf Hitler’s deputy, Rudolf Hess.

But in 2014, sponsors agreed to donate money for each step marched by the neo-Nazis, with the cash going to programs that fight Nazis, the Guardian reported at the time.

It was billed as Germany’s most involuntary walkathon.

Instead of greeting the group with protests, they put up banners welcoming them to the “Nazis Against Nazis” walkathon, according to a video on a YouTube channel run by the organization that promoted it.