City councils, though, often do not share that view or distinguish much between art and graffiti. They see both as a public annoyance that damages the quality of life in neighborhoods and communities, and they worry that any form of illegal street art makes vandalism seem acceptable and lowers property values. To fight it, cities paint over walls, arrest or ticket graffiti artists, and even pass legislation forbidding anyone less than 21 years old to carry spray paint. However, some cities have a different approach. Sao Paolo, Melbourne, and Taipei have established areas where graffiti is legal, hoping to allow artistic expression while discouraging vandalism