"It's incredible to watch neo-nazis march in 2017, while I, a Jewish woman, headline a show in Berlin where these tunnels were built by him," Pink wrote on Instagram. "My heart aches for the amount of hatred in this world. But in this place, where so many awful things happened once upon a time, here we are together in Berlin. People of all walks of life celebrating together... This city of Berlin is full of beautiful, loving people who accept me for who I am. The world is still full of beautiful people. Hate will not win if we don't let it."