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The Five Star Movement (M5S) is an Italian anti-establishment party. It was founded in 2009 by comedian Beppe Grillo and journalist Gianroberto Casaleggio. The party's platform is based on a number of populist and anti-establishment policies, including direct democracy, anti-corruption, and environmentalism. The M5S has been a major force in Italian politics since its inception, and it is currently the largest party in the Italian parliament.