If you get into their sights, you're suddenly in the limelight; a group of German light artists and activists hunt down controversial buildings and forgotten memorials at night.br The light guerrillas find subjects all over Europe: television towers that are set to be privatized, industrial buildings that face ruin, and building projects that swallow millions in tax money. As soon as it gets dark, they arrange a meeting and light up a building with mobile floodlights for five to ten minutes.