National Guard Activated to Calm Tensions In Baltimore In Wake Of Riots After Death of Freddie Gray

BALTIMORE, MD - APRIL 28: Riot police sit in an armored vehicle after the 10 pm imposed curfew the night following citywide riots over the death of Freddie Gray on April 28, 2015 in Baltimore, Maryland. Freddie Gray, 25, was arrested for possessing a switch blade knife April 12 outside the Gilmor Houses housing project on Baltimore's west side. According to his attorney, Gray 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)