A cursory search on Twitter for @AuschwitzMuseum and you'll find, in seconds, that it has 1.5m followers. With films like 'Schindler's List', Auschwitz-Birkenau has come to symbolise the entirety of the Nazi effort to annihilate the Jewish race. I'll never forget finding myself alone, at dusk, wandering the ruins of the Birkenau camp in 1991. Passing row upon row of wooden huts, and then, the spectre of gas chambers. Even though nearly 50 years had passed since the camp had been liberated by Soviet forces, I could sense a feeling, something malign in this place. But while Auschwitz-Birkenau has become...