Today is Holocaust Memorial Day. In their words:
"HMD aims to commemorate, to educate and to prompt action in the UK. HMD commemorates the lives of those lost in the Holocaust; as a result of Nazi persecution and in more recent genocides. It educates about the Holocaust and it lessons for the present day. It prompts action in the UK highlighting the continuing dangers of racism, anti-semitism and all forms of discrimination.
The tragedies of Cambodia, Bosnia, Rwanda and Darfur show that the international community, and each of us as citizens, has not truly understood the lessons of the Holocaust."
The photo is of an installation called 6 million + buttons
and is an attempt to try to let your mind get round the concept of what six million means. Me? I always used to imagine that one morning, London was empty. All the streets, all the houses, all the shops. If you get the chance do go and see this and contemplate. Take some buttons with you, too.
A more general view here
See where on the London Daily Photo Map