A modern art collection belonging to the grandson of a Nazi-era arms manufacturer is causing controversy in the German capital, Berlin.
By Bethany Bell
BBC correspondent in Germany
German collector Friedrich Christian Flick has offered his collection of modern art to a Berlin museum.
But Jewish groups in Germany say the exhibit is based on blood money and should be refused.
The Flick collection comprises about 2,500 modern art works, including pieces by Marcel Duchamp and Alberto Giacometti.
Mr Flick has offered to display the collection in Berlin's Hamburger Banhoff museum for seven years.
But there has been an outcry from some Jewish leaders in Germany.
They are concerned that Mr Flick inherited some of his fortune from his grandfather - a prominent arms supplier to the Nazis who used slave and forced labourers.
For his part Mr Flick says he is not trying to relativise or make people forget the crimes of his grandfather.