German businessman John Rabe, together with some other foreigners, helped save over 200,000 Chinese lives during the Nanjing Massacre, one of the darkest chapters of WWII. His diaries became vital evidence of the atrocities committed by invading Japanese troops.

Who was Rabe and why does his legacy still matter today?

Watch documentary: "Echoes of History: The Good Man of Nanjing."

编辑：张娟