Police in Cannes are to stage a two-hour strike during the town's famous film festival later this month. The walkout could disrupt security arrangements at the 12-day gathering, which is expected to attract stars including Tom Hanks and Kirsten Dunst. Unions are hoping to grab the spotlight on the event's third day, 19 May. They will protest outside the event's headquarters, the Palais de Festivals. BBC reports.