The wall was a white wall, after the tragic death of Lenon in the Dakota building in NY the inhabitants of Prague began to graphite this wall with messages of peace and freedom and in support of the murdered singer. The communist authorities of the time painted the wall again in white, but the graffiti came out again, again and again. Today is the only place you can paint on the screen and leave your message, graffiti cover other older. It has a special value for the moment of communist oppression felt by the Czech people.