Mourners pay their respects at the casket of Freddie Gray before his funeral at New Shiloh Baptist Church April 27, 2015 in Baltimore, Maryland. Family members and friends are expected to turn out in large numbers Monday at the funeral of Gray, the 25-year-old black man who died April 19 after an encounter April 12 with police left him with grave spinal injuries. (AFP Photo/Brendan Smialowski)

Freddie Gray’s family pays its last respects while standing at his casket during his funeral at the New Shiloh Baptist Church during his funeral April 27, 2015 in Baltimore, Maryland. Gray, 25, was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

Pallbearers carry the casket of Freddie Gray to the hearse after his funeral service at New Shiloh Baptist April 27, 2015 in Baltimore, Maryland. Gray, 25, was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Drew Angerer/Getty Images)

A young woman leaves a lipstick print after kssing Freddie Gray’s casket before it is lowered into the ground at Woodlawn Cemetery April 27, 2015 in Baltimore, Maryland. Gray, 25, was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

Friends and relatives say their last goodbyes to Freddie Gray as his casket is lowered into his grave at the Woodland Cemetery April 27, 2015 in Baltimore, Maryland. Gray, 25, was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

Doves are released for Freddie Gray, who died following an arrest by the Baltimore police department, at his burial at Woodlawn Cemetery in Baltimore, Maryland April 27, 2015. (Reuters Photo/Shannon Stapleton)

Freddie Gray’s casket leaves the New Shiloh Baptist Church during his funeral in Baltimore April 27, 2015. 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 Gray, a black man who died in police custody. (Reuters Photo/Sait Serkan Gurbuz)

A demonstrator faces off with a line of Baltimore Police officers at the corner of Pennsylvania and North avenues during violent protests following the funeral of Freddie Gray April 27, 2015 in Baltimore, Maryland. Gray, 25, who was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

Baltimore Police officers protect themselves as protesters throw broken bricks at them outside the Mondawmin Mall following the funeral of Freddie Gray April 27, 2015 in Baltimore, Maryland. Gray, 25, who was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

Protestors surround a Baltimore Police officer near Mowdamin Mall, April 27, 2015 in Baltimore, Maryland. The funeral service for Freddie Gray, who died last week while in Baltimore Police custody, was held on Monday morning. (AFP Photo/Drew Angerer/Getty Images)

A man shouts calm as protesters face off with Baltimore Police as a CVS pharmacy burns at the corner of Pennsylvania and North avenues during violent protests following the funeral of Freddie Gray April 27, 2015 in Baltimore, Maryland. Gray, 25, who was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

A man shouts for calm as protesters clash with Baltimore Police at the corner of Pennsylvania and North avenues during violent protests following the funeral of Freddie Gray April 27, 2015 in Baltimore, Maryland. Gray, 25, who was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

A woman screams, “Kill me” at the Baltimore Police during violent protests at the corner of Pennsylvania and North avenues following the funeral of Freddie Gray April 27, 2015 in Baltimore, Maryland. Gray, 25, who was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

A woman looks at a list of people allegedly killed by police, during the funeral of Freddie Gray at New Shiloh Baptist Church in Baltimore, Maryland, US, April 27, 2015. Freddie Gray died 19 April from a spinal injury sustained while in police custody. Gray’s death has sparked protests that led to clashes with police and arrests of dozens of people over the weekend. (EPA Photo/Michael Reynolds)

Demonstrators jump on a damaged Baltimore police department vehicle during clashes in Baltimore, Maryland April 27, 2015. Several Baltimore police officers were injured on Monday in violent clashes with young people after the funeral of a black man, Freddie Gray, who died in police custody, and local law enforcement warned of a threat by gangs.
(Reuters Photo/Shannon Stapleton)

Baltimore police officers tackle and arrest looters after they emerged from a “Deals” store during clashes between rioters and police in Baltimore, Maryland April 27, 2015. Maryland Governor Larry Hogan declared a state of emergency and activated the National Guard to address the violence in Baltimore, his office said on Monday. Several Baltimore police officers were injured on Monday in violent clashes with young people after the funeral of a black man, Freddie Gray, who died in police custody, and local law enforcement warned of a threat by gangs. (Reuters Photo/Jim Bourg)

Baltimore police officers tackle and arrest looters after they emerged from a “Deals” store with merchandise during clashes between rioters and police in Baltimore, Maryland April 27, 2015. Maryland Governor Larry Hogan declared a state of emergency and activated the National Guard to address the violence in Baltimore, his office said on Monday. Several Baltimore police officers were injured on Monday in violent clashes with young people after the funeral of a black man, Freddie Gray, who died in police custody, and local law enforcement warned of a threat by gangs. (Reuters Photo/Jim Bourg)

A demonstrator looks up after being sprayed with pepper spray during clashes in Baltimore, Maryland April 27, 2015. Maryland Governor Larry Hogan declared a state of emergency and activated the National Guard to address the violence in Baltimore, his office said on Monday. Several Baltimore police officers were injured on Monday in violent clashes with young people after the funeral of a black man, Freddie Gray, who died in police custody, and local law enforcement warned of a threat by gangs. (Reuters Photo/Shannon Stapleton)

Firefigthers respond to a fire at a CVS pharmacy on Pennsylvania Avenue in Baltimore April 27, 2015. Hundreds of rioters looted businesses and set buildings on fire in Baltimore on Monday in widespread violence that injured at least 15 police officers following the funeral of Freddie Gray, a 25-year-old black man who died after he was injured in police custody. (Reuters Photo/Sait Serkan Gurbuz)

A Baltimore firefighter fights a fire inside a burning building set ablaze by rioters during clashes in Baltimore, Maryland April 27, 2015. Maryland Governor Larry Hogan declared a state of emergency and activated the National Guard to address the violence in Baltimore, his office said on Monday. Several Baltimore police officers were injured on Monday in violent clashes with young people after the funeral of a black man, Freddie Gray, who died in police custody, and local law enforcement warned of a threat by gangs. (Reuters Photo/Jim Bourg)

A Baltimore Metropolitan Police transport vehicle burns during clashes in Baltimore, Maryland April 27, 2015. Maryland Governor Larry Hogan declared a state of emergency and activated the National Guard to address the violence in Baltimore, his office said on Monday. Several Baltimore police officers were injured on Monday in violent clashes with young people after the funeral of a black man, Freddie Gray, who died in police custody, and local law enforcement warned of a threat by gangs. (Reuters Photo/Shannon Stapleton)

A protestor stands on a stool by looted businesses on North Avenue and Fulton Street during a protest for the death of Freddie Gray in Baltimore, Maryland, USA, 27 April 2015. Gray died of spinal cord injuries on 19 April while in police custody; the US Justice Department announced that they are launching their own investigation into the case. (EPA Photo/Noah Scialom)

A man sits in the street near burning cars near the intersection of Pennsylvania Avenue and North Avenue, April 27, 2015 in Baltimore, Maryland. Riots have erupted in Baltimore following the funeral service for Freddie Gray, who died last week while in Baltimore Police custody. (AFP Photo/Drew Angerer/Getty Images)

A man has his eyes cleaned after he was pepper sprayed by the Baltimore Police at the corner of Pennsylvania and North avenues during violent protests following the funeral of Freddie Gray April 27, 2015 in Baltimore, Maryland. Gray, 25, who was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

A mixture of milk and water rolls down a man’s chest after he was pepper sprayed by the Baltimore Police during violent protests following the funeral of Freddie Gray April 27, 2015 in Baltimore, Maryland. Gray, 25, who was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

Demonstrators climb on a destroyed Baltimore Police car in the street near the corner of Pennsylvania and North avenues during violent protests following the funeral of Freddie Gray April 27, 2015 in Baltimore, Maryland. Gray, 25, who was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes 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. (AFP Photo/Chip Somodevilla/Getty Images)

A woman with goods looted from a store runs past burning vehicles during clashes in Baltimore, Maryland April 27, 2015. 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. (Reuters Photo/Shannon Stapleton)