Foto: CC-BY-SA Stephan Röhl / <a rel="nofollow" class="external text" href="http://www.boell.de">www.boell.de</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/44112235@N04">Heinrich  Böll Stiftung</a> from Berlin, Deutschland
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/boellstiftung/5181684123/">Andrea Dernbach und Hoda Salah</a>