Ravens are people who attend massive techno parties called raves where loud techno music is played and many people use drugs. Raves are known for their illegal drug use and dreamlike atmosphere that attracts youth seeking rebellion through the bright, crazy fashion and strobe lights. The rave subculture started in the late 1980s in London when organizations began holding illegal raves in abandoned warehouses, though local regulations in the 1990s made such large parties more difficult to organize, splitting the scene into different dance music styles.