A three-day international cultural festival has began on the banks of Yamuna in Delhi. Prime Minister Narendra Modi is attending the event which is organized by spiritual leader Sri Sri Ravishankar's Art of Living foundation.<br/><br/>The festival began with the cultural performance by the 1800 artists. About 35 lakh people from across the globe including 36 thousand artists are expected to participate in the mega cultural extravaganza. The event has attracted criticism from environment activists for alleged damage to fragile biodiversity of Yamuna river.