La Tomatina is celebrated on the last Wednesday in August in the small town of Bunol in eastern Spain. The festival began way back in 1944 but there is no known religious or political basis for it. Some people guess it began as a food fight among children or that local townspeople chucked tomatoes to show their dislike of a local politician. Whatever the case, the event caught on and has happened every year until the Spanish dictator Francisco Franco banned the festival for "having no religious significance." However, the town resumed the event after Franco died in the '70s.
Read more: La Tomatina Festival http://www.kidzworld.com/article/1442-la-tomatina-festival#ixzz2tbBfWPW9