Big Brother Is Watching

The Chicago Bulls and the Washington Redskins have a message for unruly fans.

Somebody’s watching you.

The Bulls and Redskins are among at least 20 professional sports franchises who have installed surveillance cameras in their stadiums to find fans who instigate fights or throw objects from the stands, said Clark Mleynek, an architect with HOK Sport, a firm that designs sports stadiums.

While the system costs around $100,000, it’s an expense teams are incurring because sports executives and players are becoming more concerned about safety at sporting events after several incidents in which athletes have been pelted by snowballs, coins and other projectiles during games.