A police vehicle burns, Monday, April 27, 2015, during unrest following the funeral of Freddie Gray in Baltimore (Photo: AP)

A man walks past a burning police vehicle, Monday, April 27, 2015, during unrest following the funeral of Freddie Gray in Baltimore (Photo: AP)

Police stand in front of a burning store, Monday, April 27, 2015, during unrest following the funeral of Freddie Gray in Baltimore (Photo: AP)

A demonstrator raises his fist as police stand in formation as a store burns, Monday, April 27, 2015, during unrest following the funeral of Freddie Gray in Baltimore (Photo: AP)

Demonstrators yell at Baltimore police during clashes in Baltimore, Maryland April 27, 2015. April 27, 2015. Several Seven Baltimore police officers were injured on Monday as rioters threw bricks and stones and burned patrol cars in violent protests after the funeral of Freddie Gray, a black man who died in police custody (Photo: Reuters)

Demonstrators jump on a damaged Baltimore police department vehicle during clashes in Baltimore, Maryland April 27, 2015 (Photo: Reuters)

A demonstrator taunts police as they respond to thrown objects, Monday, April 27, 2015, after the funeral of Freddie Gray in Baltimore (Photo: AP)

Smoke billows from a CVS Pharmacy store in Baltimore on Monday, April 27, 2015 (Photo: AP)

Firefighters battle a blaze, Monday, April 27, 2015, after rioters plunged part of Baltimore into chaos, torching a pharmacy, setting police cars ablaze and throwing bricks at officers (Photo: AP)

A protester walks through the smoke of burning Baltimore buildings set ablaze by rioters as a police armored car drives past during clashes in Baltimore, Maryland April 27, 2015 (Photo: Reuters)

Firefighters battle a blaze, Monday, April 27, 2015, after rioters plunged part of Baltimore into chaos, torching a pharmacy, setting police cars ablaze and throwing bricks at officers (Photo: AP)

A fire burns in the street Monday, April 27, 2015, during unrest following the funeral of Freddie Gray in Baltimore (Photo: AP)

Baltimore police officer sprays pepper spray to demonstrators after the funeral of Freddie Gray, Monday, April 27, 2015, at New Shiloh Baptist Church in Baltimore (Photo: AP)

People with goods looted from a store walk near burning vehicles during clashes in Baltimore, Maryland April 27, 2015 (Photo: Reuters)