Protests after acquittal of St. Louis police officer

Demonstrators protesting the acquittal of former St. Louis police officer Jason Stockley march in St. Louis on Sept. 17, 2017.

Demonstrators protest outside the St. Louis Police Department headquarters in response to a not guilty verdict in the trial of former St. Louis police officer Jason Stockley on Sept. 17, 2017.

Demonstrators protest outside the St. Louis Police Department headquarters in response to a not guilty verdict in the trial of former St. Louis police officer Jason Stockley Sunday, Sept. 17, 2017.

Police arrest a man as they try to clear a violent crowd Saturday, Sept. 16, 2017, in University City, Mo. Earlier, protesters marched peacefully in response to a not guilty verdict in the trial of former St. Louis police officer Jason Stockley.

Protesters march through West County Mall in Des Peres, Mo. on Sept. 16, 2017 in response to a not guilty verdict in the trial of former St. Louis police officer Jason Stockley.

Protesters march through West County Mall in Des Peres, Mo. on Sept. 16, 2017 in response to a not guilty verdict in the trial of former St. Louis police officer Jason Stockley.

A protester yells as a woman rushes to close the doors to a department store as protesters march through West County Mall in response to a not guilty verdict in the trial of former St. Louis police officer Jason Stockley Saturday, Sept. 16, 2017, in Des Peres, Mo.

Protesters march through West County Mall in response to a not guilty verdict in the trial of former St. Louis police officer Jason Stockley Saturday, Sept. 16, 2017, in Des Peres, Mo. Stockley was acquitted in the 2011 killing of a black man following a high-speed chase.

Protesters gather, Friday, Sept. 15, 2017, in St. Louis, after a judge found a white former St. Louis police officer, Jason Stockley, not guilty of first-degree murder in the death of a black man, Anthony Lamar Smith, who was fatally shot following a high-speed chase in 2011.

Police line up as protesters gather, Friday, Sept. 15, 2017, in St. Louis, after a judge found a white former St. Louis police officer, Jason Stockley, not guilty of first-degree murder in the death of a black man, Anthony Lamar Smith, who was fatally shot following a high-speed chase in 2011.

Protests erupted in St. Louis on Sept. 15, 2017, after a white former St. Louis police officer was acquitted of killing a black man.

A police officer speaks to a protestor in St. Louis on Sept. 15, 2017, hours after a former cop was acquitted of killing a black man.

Protesters march in St. Louis on Sept. 15, 2017, after a former police officer was acquitted of killing a black man.

Protestors demonstrate in St. Louis after a former officer was acquitted in a murder trial.

Protesters gather on Sept. 15, 2017, in St. Louis after a judge found a white former St. Louis police officer, Jason Stockley, not guilty of first-degree murder in the death of a black man, Anthony Lamar Smith.

Protesters hold up signs as restaurant patrons look out the window on Sept. 15, 2017.

Protesters yell at law enforcement officers on the steps of the Old Courthouse following a verdict in the trial of former St. Louis police officer Jason Stockley in St. Louis on Friday, Sept. 15, 2017. Stockley, a white police officer, was found not guilty in the 2011 killing of black suspect Lamar Smith following a high-speed chase.

A man rides a bike as police in riot gear stand watch following a verdict in the trial of former St. Louis police officer Jason Stockley Friday, Sept. 15, 2017, in St. Louis. Stockley has been found not guilty in the 2011 killing of Lamar Smith following a high-speed chase.

Protesters gather outside of the courthouse, Friday, Sept. 15, 2017, in downtown St. Louis, after a judge found a white former St. Louis police officer, Jason Stockley, not guilty of first-degree murder in the death of a black man, Anthony Lamar Smith, who was fatally shot following a high-speed chase in 2011.

Anthony Shahid holds a photo of former St. Louis police officer Jason Stockley, as he stands with Michael Brown, Sr., father of Michael Brown, as they rally in opposition to a not guilty verdict of Stockley on Friday, Sept. 15, 2017 in St. Louis.

Protesters march down, Friday, Sept. 15, 2017, in downtown St. Louis, after a judge found a white former St. Louis police officer, Jason Stockley, not guilty of first-degree murder in the death of a black man, Anthony Lamar Smith, who was fatally shot following a high-speed chase in 2011.

“The boxed us in and started peppy spraying us,” said Mackenzie Marks of St. Louis, who her eyes washed out after being pepper spray protesting the not guilty verdict in the killing of Anthony Lamar Smith by former St. Louis police officer Jason Stockley on Friday, Sept. 15, 2017, near City Hall.

Police officers guard the streets as protesters gather, Friday, Sept. 15, 2017, in downtown St. Louis, after a judge found a white former St. Louis police officer, Jason Stockley, not guilty of first-degree murder in the death of a black man, Anthony Lamar Smith, who was fatally shot following a high-speed chase in 2011.