Violent protests rock Milan | CNBC International

Thousands of demonstrators took to the streets of Milan on the opening day of the 2015 World Expo. Dozens of cars were set alight as police deployed water cannons and tear gas. Phil Han reports from the scene. Subscribe to CNBC International: http://bit.ly/1eiWsDq Like us on CNBC's Facebook page   / cnbc   Follow us on CNBC's Twitter accounts   / cnbcworld     / cnbc