A group of people performs during the Luzern Carnival parade in Luzern February 11, 2010. The history of the carnival can be traced back over more than 600 years and is best known for its individually hand-crafted masks and costumes which are paraded in the town's streets and squares by thousands of revellers during the three-day festival. REUTERS/Romina Amato (SWITZERLAND - Tags: SOCIETY POLITICS)