Nikki Charles of the activist groups Harriet's Wildest Dreams and the D.C. Safety Squad block part of K Street in Washington D.C. to protest the police killing of Tyre Nichols.

Nikki Charles of the activist groups Harriet's Wildest Dreams and the D.C. Safety Squad block part of K Street in Washington D.C. to protest the police killing of Tyre Nichols. / Tyrone Turner/WAMU For NPR

Authorities in Memphis, Tenn., released body camera footage from the police killing of Tyre Nichols on Friday. This has sparked protests and calls for national police reform across the U.S.

Nichols was pulled over on Jan. 7 for a traffic stop. After trying to flee on foot, Nichols was brutally beaten by police. He died in a hospital three days later. Five officers were fired and charged with murder.

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Protesters march in Boston on Friday night demanding police accountability following the release of video of the fatal beating of Tyre Nichols in Memphis, Tenn.

Protesters march in Boston on Friday night demanding police accountability following the release of video of the fatal beating of Tyre Nichols in Memphis, Tenn. / WBUR

Hannah De Oliveira (left) and Cami Thomas hold a candle on Friday night during a vigil for Tyre Nichols outside of the St. Louis Metropolitan Police Department.

Hannah De Oliveira (left) and Cami Thomas hold a candle on Friday night during a vigil for Tyre Nichols outside of the St. Louis Metropolitan Police Department. / St. Louis Public Radio

Protesters take over a bridge Friday, Jan. 27, 2023, in Memphis, Tenn., as authorities release police video depicting five Memphis officers beating Tyre Nichols, whose death resulted in murder charges and provoked outrage at the country's latest instance of police brutality.

Protesters take over a bridge Friday, Jan. 27, 2023, in Memphis, Tenn., as authorities release police video depicting five Memphis officers beating Tyre Nichols, whose death resulted in murder charges and provoked outrage at the country's latest instance of police brutality. / AP

Protesters rally against the fatal police assault of Tyre Nichols, at Times Square in New York City, on January 27, 2023.

Protesters rally against the fatal police assault of Tyre Nichols, at Times Square in New York City, on January 27, 2023. / AFP via Getty Images

NYPD officers escort a vehicle damaged during a protest for Tyre Nichols on January 27, 2023 in New York City.

NYPD officers escort a vehicle damaged during a protest for Tyre Nichols on January 27, 2023 in New York City. / Michael M. Santiago/Getty Images

Protesters rally outside of the Coleman A. Young Municipal Center in Detroit against the fatal police assault of Tyre Nichols.

Protesters rally outside of the Coleman A. Young Municipal Center in Detroit against the fatal police assault of Tyre Nichols. / AFP via Getty Images

Protests at Lafayette Square in front of the White House after the video of Tyre Nichols being beaten by police in Memphis went public.

Protests at Lafayette Square in front of the White House after the video of Tyre Nichols being beaten by police in Memphis went public. / Tyrone Turner/WAMU For NPR

Nee Nee Taylor, co-founder of the abolitionist group, Harriet's Wildest Dreams, confronts a police officer in Washington D.C. during their demonstration on the night that the video of the killing of Tyre Nichols was released.

Nee Nee Taylor, co-founder of the abolitionist group, Harriet's Wildest Dreams, confronts a police officer in Washington D.C. during their demonstration on the night that the video of the killing of Tyre Nichols was released. / Tyrone Turner/WAMU For NPR

A demonstrator wears a Black Live Matter earring during a rally in Washington, D.C., against the fatal police assault of Tyre Nichols.

A demonstrator wears a Black Live Matter earring during a rally in Washington, D.C., against the fatal police assault of Tyre Nichols. / Stefani Reynolds/AFP via Getty Images

Protests at Lafayette Square in front of the White House after the video of Tyre Nichols being beaten by police in Memphis went public.

Protests at Lafayette Square in front of the White House after the video of Tyre Nichols being beaten by police in Memphis went public. / Tyrone Turner/WAMU For NPR

Protesters march on a bridge Friday in Memphis, Tenn., as authorities release police video depicting five Memphis officers beating Tyre Nichols, whose death resulted in murder charges and provoked outrage at the country's latest instance of police brutality.

Protesters march on a bridge Friday in Memphis, Tenn., as authorities release police video depicting five Memphis officers beating Tyre Nichols, whose death resulted in murder charges and provoked outrage at the country's latest instance of police brutality. / AP