Page "Smart mob" Paragraph 18

* On July 5, 2005, during U2's performance of the song New Year's Day at a stadium in Chorzów, Poland, the audience of 70, 000 waved colored articles of clothing to form a giant Polish flag of white and red: fans on the pitch waved red, those in the bleachers waved white.

This behavior was coordinated by fans communicating on the Internet.