Chicago's mayor appealed for calm as officials released a "chilling" video of the police shooting of a black teen Tuesday, hours after the white officer was charged with murder.
"I understand people will be upset and will want to protest when they see this video," Mayor Rahm Emanuel told reporters.
"It is fine to be passionate, but it is essential that it remains peaceful."
The graphic video is the latest in a string of police shootings caught on camera that have sparked mass -- and sometimes violent -- protests and engulfed the United States in a debate over racism and the use of deadly force by police.
It comes a day after three men opened fire on protesters in Minneapolis, Minnesota who were demonstrating in response to another fatal police shooting. Five people were wounded, none seriously, and police arrested two suspects on Tuesday.
The Chicago dashcam video shows officer Jason Van Dyke opening fire on Laquan McDonald, 17, as he walks down the middle of the street.
McDonald can be seen walking away from Van Dyke. His body then spins and strikes the pavement. He lifts his head, moves an arm and then a cloud from another gunshot rises up from his chest as he lays in a fetal position.
He does not move as an officer moves into the frame for just long enough to kick a knife away from his hand.
Prosecutors said Van Dyke opened fire just 30 seconds after his cruiser pulled up to the scene and six seconds after stepping out of it.
"It is graphic, it is violent, it is chilling," Cook County State's Attorney Anita Alvarez told reporters after charging Van Dyke with first degree murder.
"To watch a 17-year-old young man die in such a violent manner is deeply disturbing and I have absolutely no doubt this video will tear at the hearts of all Chicagoans."
McDonald -- who was holding a knife when he was shot and had earlier slashed at the tires of a police cruiser -- was moving away from Van Dyke and made no threatening gestures when he was shot, Alvarez said.
The seven other responding officers did not believe deadly force was necessary, she added.
It was the first time a Chicago police officer has been charged with first-degree murder for an on-duty fatality in more than 30 years, the Chicago Tribune reported.
Police Superintendent Garry McCarthy said his officers would be out in force to ensure people were allowed to protest peacefully but warned they would be "intolerant of criminal behavior."
"People have a right to be angry. People have a right to protest. People have a right to free speech. But they do not have a right to commit criminal acts," he told reporters.
McDonald's family has joined community leaders and city officials in appealing for peace.
"No one understands the anger more than us but if you choose to speak out, we urge you to be peaceful," they said in a statement released to local media.
"Don't resort to violence in Laquan's name. Let his legacy be better than that."
The city approved a $5 million settlement for McDonald's family in April and federal authorities are investigating the case.
Police had initially said McDonald was high on PCP, acting erratically and lunged at the officers with a knife.
- Minneapolis protest -
Meanwhile in Minneapolis, tensions were running high after Monday night's shooting at protesters demonstrating over police killing of another black man, 24-year-old Jamar Clark.
"White supremacists attacked the #4thPrecinctShutDown in an act of domestic terrorism," the group wrote on its Facebook page. "We won't be intimidated."
Black Lives Matter -- a movement formed in the aftermath of last year's unrest in Ferguson, Missouri -- blamed the attack on white supremacists, vowing on their Facebook page: "We won't be intimidated."
Minneapolis police said Clark died in a struggle with police responding to a domestic disturbance on November 15.
His brother Eddie Sutton thanked demonstrators for their vigilance but asked them to suspend their protests, according to the Minneapolis Star Tribune.
"In light of tonight's shootings, the family feels out of imminent concern for the safety of the occupiers, we must get the occupation of the Fourth Precinct ended and onto the next step," Sutton said.
Mayor Betsy Hodges praised police for swiftly two suspects in the "abhorrent shooting" and said the city is "sparing no efforts to bring any and all those responsible to justice."
Initial police reports indicated that three white men fired into the crowd of demonstrators at 10:45 pm Monday.
Minneapolis identified the two suspects arrested as a 23-year-old white man and a 32 year-old Hispanic -- and said a search was on for additional suspects.
Chicago’s mayor appealed for calm as officials released a “chilling” video of the police shooting of a black teen Tuesday, hours after the white officer was charged with murder.
“I understand people will be upset and will want to protest when they see this video,” Mayor Rahm Emanuel told reporters.
“It is fine to be passionate, but it is essential that it remains peaceful.”
The graphic video is the latest in a string of police shootings caught on camera that have sparked mass — and sometimes violent — protests and engulfed the United States in a debate over racism and the use of deadly force by police.
It comes a day after three men opened fire on protesters in Minneapolis, Minnesota who were demonstrating in response to another fatal police shooting. Five people were wounded, none seriously, and police arrested two suspects on Tuesday.
The Chicago dashcam video shows officer Jason Van Dyke opening fire on Laquan McDonald, 17, as he walks down the middle of the street.
McDonald can be seen walking away from Van Dyke. His body then spins and strikes the pavement. He lifts his head, moves an arm and then a cloud from another gunshot rises up from his chest as he lays in a fetal position.
He does not move as an officer moves into the frame for just long enough to kick a knife away from his hand.
Prosecutors said Van Dyke opened fire just 30 seconds after his cruiser pulled up to the scene and six seconds after stepping out of it.
“It is graphic, it is violent, it is chilling,” Cook County State’s Attorney Anita Alvarez told reporters after charging Van Dyke with first degree murder.
“To watch a 17-year-old young man die in such a violent manner is deeply disturbing and I have absolutely no doubt this video will tear at the hearts of all Chicagoans.”
McDonald — who was holding a knife when he was shot and had earlier slashed at the tires of a police cruiser — was moving away from Van Dyke and made no threatening gestures when he was shot, Alvarez said.
The seven other responding officers did not believe deadly force was necessary, she added.
It was the first time a Chicago police officer has been charged with first-degree murder for an on-duty fatality in more than 30 years, the Chicago Tribune reported.
Police Superintendent Garry McCarthy said his officers would be out in force to ensure people were allowed to protest peacefully but warned they would be “intolerant of criminal behavior.”
“People have a right to be angry. People have a right to protest. People have a right to free speech. But they do not have a right to commit criminal acts,” he told reporters.
McDonald’s family has joined community leaders and city officials in appealing for peace.
“No one understands the anger more than us but if you choose to speak out, we urge you to be peaceful,” they said in a statement released to local media.
“Don’t resort to violence in Laquan’s name. Let his legacy be better than that.”
The city approved a $5 million settlement for McDonald’s family in April and federal authorities are investigating the case.
Police had initially said McDonald was high on PCP, acting erratically and lunged at the officers with a knife.
– Minneapolis protest –
Meanwhile in Minneapolis, tensions were running high after Monday night’s shooting at protesters demonstrating over police killing of another black man, 24-year-old Jamar Clark.
“White supremacists attacked the #4thPrecinctShutDown in an act of domestic terrorism,” the group wrote on its Facebook page. “We won’t be intimidated.”
Black Lives Matter — a movement formed in the aftermath of last year’s unrest in Ferguson, Missouri — blamed the attack on white supremacists, vowing on their Facebook page: “We won’t be intimidated.”
Minneapolis police said Clark died in a struggle with police responding to a domestic disturbance on November 15.
His brother Eddie Sutton thanked demonstrators for their vigilance but asked them to suspend their protests, according to the Minneapolis Star Tribune.
“In light of tonight’s shootings, the family feels out of imminent concern for the safety of the occupiers, we must get the occupation of the Fourth Precinct ended and onto the next step,” Sutton said.
Mayor Betsy Hodges praised police for swiftly two suspects in the “abhorrent shooting” and said the city is “sparing no efforts to bring any and all those responsible to justice.”
Initial police reports indicated that three white men fired into the crowd of demonstrators at 10:45 pm Monday.
Minneapolis identified the two suspects arrested as a 23-year-old white man and a 32 year-old Hispanic — and said a search was on for additional suspects.
