A Baltimore firefighter pauses before putting on his protective gear to head into a burning building set ablaze by rioters during clashes after the funeral of Freddie Gray in Baltimore

A Baltimore firefighter pauses before putting on his protective gear to head into a burning building set ablaze by rioters during clashes after the funeral of Freddie Gray in Baltimore

A Baltimore firefighter pauses before putting on his protective gear to head into a burning building set ablaze by rioters during clashes after the funeral of Freddie Gray in Baltimore, Maryland in the early morning hours of April 28, 2015. Baltimore erupted in violence as hundreds of rioters looted stores, burned buildings and injured at least 15 police officers following the funeral of Gray, a 25-year-old black man who died after he was injured in police custody. REUTERS/Jim Bourg