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

BALTIMORE, MD - APRIL 28: A man looks at a welcome sign beside Druid Hill Park that lies on the ground the morning after citywide riots over the death of Freddie Gray on April 28, 2015 in Baltimore, Maryland. 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)