Police and National Guard troops are beefing up security in Baltimore, Maryland, while residents and other volunteers are cleaning up after Monday's looting, fires and clashes with authorities.
Volunteers and local residents help clean up Baltimore after riots broke out following the funeral for Freddie Gray, who died of a severe spinal cord injury he got while in police custody. See pictures of the cleanup efforts.
The arrest and death of Freddie Gray in Baltimore has sparked protests and accusations of police brutality. But it's unclear how Gray, who was arrested on a weapons charge April 12, suffered a severe spinal cord injury that led to his death seven days later.
The bizarre circumstances surrounding Freddie Gray's death have inflamed tensions across the country. How could a man suffer a severe spinal cord injury after getting arrested? And what happened in the 30 minutes before he was taken to a hospital?