Haben wir nichts aus der Geschichte gelernt?

Unchanged Flickr photo by Ziki Questi https://www.flickr.com/photos/zikiquesti/

Licensed by her under Attribution-NonCommercial-NoDerivs 2.0 Generic (CC BY-NC-ND 2.0) license https://creativecommons.org/licenses/by-nc-nd/2.0/