Artist Gunter Demnig makes brass cobbles he calls stumbling blocks that are set into the pavements of Berlin. Most have engraved in them  the word, “ermordet” – murdered. Others say, “Flucht in den Tod” – “killed whilst trying to escape.” Each marks the home of a victim of the holocaust. Joanna Robertson, the BBC’s Berlin correspondent, wrote about them in a compelling edition of From Our Own Correspondent in which she described the physical and psychological legacies of history that surround and influence residents of the German capital, including her own four-year-old daughter.  It is one of the finest FOOC’s I have heard.