• Clashes at a protest in Hamburg set the stage for the G-20 summit meeting starting today in Germany’s second-largest city.

The riot police halted a protest march to isolate a group of masked demonstrators from the otherwise peaceful protest. Some chaos and violence ensued. Dozens of police officers and an unknown number of protesters were injured.

Up to 100,000 protesters, including New York City’s mayor, Bill de Blasio, are expected, and 20,000 police officers have been dispatched to provide security.