
Shalechet ("Fallen leaves" by Menashe Kadishman
I first saw his work in the Jewish Museum (Berlin), one of the most upsetting places I ever visited. You can feel the anguish by just walking the corridor! I was told that the architect, Daniel Libeskind, designed it with that purpose in mind.
You have to be there and feel it. In the meantime, go to:
http://www.juedisches-museum-berlin.de/site/EN/01-Exhibitions/01-Permanent-Exhibition/permanentexhibition00-02.php
AND
http://kadishman.com/works/