Berlin Biennale
... that at the 2012 Berlin Biennale, one artist blocked Friedrichstraße with a wall, which was removed early after public protest?
... that at the 2012 <b id="mwA9c"><a href="./Berlin_Biennale" id="mwA9g" rel="mw:WikiLink" title="Berlin Biennale">Berlin Biennale</a></b>, one artist blocked <a href="./Friedrichstraße" id="mwA9k" rel="mw:WikiLink" title="Friedrichstraße">Friedrichstraße</a> with a wall, which was removed early after public protest?