Baltimore Mayor says “thugs” are trying to “tear down what so many have fought for.”  Mayor Stephanie Rawlings-Blake has imposed a curfew, to begin tonight, and Maryland’s governor has declared a state of emergency, calling in the National Guard to restore order to the city.  Hours after the funeral for a black man who was injured while in police custody, rioters torched buildings and police cars and threw bricks at officers, injuring 15 of them.