Rare ViewsTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video11/08/2013November 8, 2013In the 1980s, Detlef Matthes took hundreds of pictures of the East German side of the Berlin Wall. That was strictly forbidden, and the East German secret police confiscated the photographs. Now they're being featured in an exhibition.https://p.dw.com/p/1ADqvAdvertisement