CHICAGO (Reuters) -- A white Chicago policeman was charged with murder on Tuesday in the October 2014 shooting of a black teenager, a day before the planned release of a patrol car's dashboard video showing the young man was shot 16 times, and the city prepared for possible protests.
The officer, Jason Van Dyke, was denied bail at a hearing in Chicago's main criminal courthouse hours after a state prosecutor, Anita Alvarez, announced first-degree murder charges against him.
Last week, a Cook County judge ordered the release of the dashcam video showing the killing of 17-year-old Laquan McDonald. Chicago authorities said they would make it public on Wednesday.
On Monday, city officials met with black community leaders who said they feared violent protests in reaction to the video, and Mayor Rahm Emmanuel appealed for calm.
The city has already paid McDonald's family a $5 million civil settlement even though they did not file a lawsuit.
The police union opposes the release of the video, saying it will taint a potential jury. The city of Chicago said it decided not to appeal the judge's order because it expected charges would be filed against Van Dyke this week.
Van Dyke has been on administrative duty while state and federal prosecutors investigated the shooting. He has said through his lawyer and the police union that the shooting was justified because he felt under threat from McDonald, who was holding a knife.
McDonald's death was one of several fatalities in cities across the United States involving police and that were captured on camera in the past 18 months, leading to protests about police use of deadly force and reopened a national debate on race relations.
Look back at recent police brutality cases:
Recent shootings by police and related protests
Chicago policeman charged with murder in shooting of black teen
People take part in a protest against police brutality and in support of Black Lives Matter during a march in New York, U.S. July 9, 2016. REUTERS/Eduardo Munoz/File Photo
Lastarla Barker protests with other demonstrators calling for the Oakland Police Department to be defunded and against police brutality in Oakland, California, U.S. July 21, 2016. REUTERS/Noah Berger
PORTLAND, USA - APRIL 11: A protester holds a sign reading 'End White Supremacy And The Police State' during a protest against fatal police shootings in Portland, Oregon, United States on April 11, 2018. John Andrew Elifritz, 48, was fatally shot by police after he reportedly fled from a stolen car and burst into a homeless shelter at the start of an alcoholics anonymous meeting last Saturday. (Photo by Alex Milan Tracy/Anadolu Agency/Getty Images)
CHICAGO, USA - APRIL 2 : People attend a protest near Trump International Hotel and Tower in response to the police shootings of unarmed victims across the US on April 2, 2018 in Chicago, United States. (Photo by Bilgin Sasmaz/Anadolu Agency/Getty Images)
People march in protest to the fatal police shooting of Charleena Lyles, in Seattle, Washington on June 22, 2017.
Police in Washington were under scrutiny after a pregnant woman was fatally shot by officers responding to a burglary call. Authorities said the 30-year-old victim, identified as Charleena Lyles, had called to report an attempted burglary at her apartment on the morning of June 18 and pulled a knife on the two officers, who shot and killed her.
/ AFP PHOTO / Jason Redmond (Photo credit should read JASON REDMOND/AFP/Getty Images)
SEATTLE, WA - JUNE 20: Chalk artwork is written on the ground at a memorial for Charleena Lyles at the apartment building in which she was killed on June 20, 2017 in Seattle, Washington. Officers from the Seattle Police Department shot and killed Lyles, a pregnant mother of four, on June 18. (Photo by David Ryder/Getty Images)
The car of Philando Castile is seen surrounded by police vehicles in an evidence photo taken after he was fatally shot by St. Anthony Police Department officer Jeronimo Yanez during a traffic stop in July 2016. Picture released June 20, 2017. Minnesota Bureau of Criminal Apprehension/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. THIS PICTURE WAS PROCESSED BY REUTERS TO ENHANCE QUALITY. AN UNPROCESSED VERSION WILL BE PROVIDED SEPARATELY.
People hold signs in protest after a jury found St. Anthony Police Department officer Jeronimo Yanez not guilty of second-degree manslaughter in the death of Philando Castile yesterday, in Manhattan, New York, U.S., June 17, 2017. REUTERS/Bria Webb
Protesters hold placards against the killing of Alton Sterling and Philando Castile in Manhattan, New York, U.S., July 7, 2016. REUTERS/Bria Webb
People take part in a protest against the killings of Alton Sterling and Philando Castile during a march in New York July 7, 2016. REUTERS/Eduardo Munoz
NEW YORK, NY - DECEMBER 06: Demonstrators march through the streets protesting the Staten Island, New York grand jury's decision not to indict a police officer involved in the chokehold death of Eric Garner in July on December 6, 2014 in New York City. Protests are being staged nationwide after grand juries investigating the deaths of Michael Brown in Ferguson, Missouri and Eric Garner in New York failed to indict the police officers involved in both incidents. (Photo by Andrew Burton/Getty Images)
A protest sign showing and image of Ezell Ford as members of the 'Black Lives Matter' alliance stage protest outside the Los Angeles Mayor Eric Garcetti's home as they try to force him to fire LAPD Police Chief Charlie Beck, in Los Angeles, California on June 7, 2015. The alliance have renewed protests after a recent report from an LAPD watchdog determined that the August 11, 2014 officer-involved shooting death of 25-year-old Ezell Ford in South Central was justified. AFP PHOTO/ MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
Portland, United States - May 19: Protesters hold a banner during a demonstration for freedom and equality against police brutality and racism at the Portland Police Bureau's North Precinct in Portland, Ore., United States, on May 19, 2017, on what would have been Malcolm X's 92nd birthday. (Photo by Alex Milan Tracy/Anadolu Agency/Getty Images)
Portland, United States - May 19: Protesters hold signs during a demonstration for freedom and equality against police brutality and racism at the Portland Police Bureau's North Precinct in Portland, Ore., United States, on May 19, 2017, on what would have been Malcolm X's 92nd birthday. (Photo by Alex Milan Tracy/Anadolu Agency/Getty Images)