There they are, three of them, gleaming, embedded in the pavement: Stolpersteine. I am passing through Belgická, a street close to our house. I'm walking there for the umpteenth time and never once before these golden squares caught my eye.

On August 6, 1945, the US dropped the atomic bomb on Hiroshima, killing about 140,000 by the end of the year, out of the 350,000 who lived in the city.

Millions of people - most of them Jews - died in labour and extermination camps. Europe should not forget.