Charlie Chaplin's classic satirical film about Adolf Hitler and fascism was released in 1940
Holocaust survivor Steven Frank takes his teenage granddaughter Maggie on a journey to learn about his experiences during the Holocaust.
A diary of a Girl Guide, that was found in Dorset, describes how she visited Hitler in Bavaria in 1936.
By Stephen Walker & Catherine Smyth
BBC News NI
By Jenny Hill
BBC Berlin correspondent
By Helen Bushby