On the 24th of February 2004, heavy machinery entered an empty industrial plot in Barcelona occupied by some sixty Gypsy families. Over a few days two diggers drilled and lifted up the concrete floor of the site, intimidating the Gypsies and finally pushing them out. They left behind a contorted surface, like a horizontal wall, to protect the site and keep it empty. This method of dissuasion demonstrates the economic value of violence and destruction in order to control space. The broken ground, the fissures and fragments of concrete slabs standing up like remnants of ancient Mayan stelae give testimony, still today, of this displacement.