BALTIMORE, MD - APRIL 28: A firefighter motions to a fireman spraying water from a firetruck to extinguish the smoldering remains of a senior center set ablaze during night riots on April 28, 2015 in Baltimore, Maryland. A state of emergency has been declared in Baltimore following violent protests which erupted after the funeral service for Freddie Gray. Gray, 25, was arrested for possessing a switch blade knife on April 12 outside the Gilmor Homes housing project on Baltimore's west side and according to his attorney died a week later in the hospital from a severe spinal cord injury he received while in police custody. (Photo by Mark Makela/Getty Images)