Killing of Amadou Diallo

In April 2021, Diallo's mother was interviewed about her reaction to the conviction of Minneapolis police officer Derek Chauvin for the murder of George Floyd.

Officer Kenneth Boss had previously been involved in an incident in which an unarmed black man was shot. After the trial Boss was reassigned to desk duty, but in October 2012, Commissioner Raymond W. Kelly restored Boss's ability to carry a firearm. As of 2012, he was the only one of the four officers still working for the NYPD. In 2015, he was promoted to sergeant in accordance with police policy, which is not subject to review by top department officials. He retired from law enforcement in 2019.

Diallo's death became an issue in the 2005 New York City mayoral election. Bronx borough president and mayoral candidate Fernando Ferrer, who had protested against the circumstances of the killing at the time, was criticized by the Diallo family and many others for telling a meeting of police sergeants that although the shooting had been a tragedy, the officers had been "over-indicted".

In April 2002, as a result of the killing of Diallo and other controversial actions, the Street Crime Unit was disbanded. In 2003, Diallo's mother published a memoir, My Heart Will Cross This Ocean: My Story, My Son, Amadou, with the help of author Craig Wolff.

In April 2000, Diallo's mother and father filed a $61 million lawsuit against the city and the officers, charging gross negligence, wrongful death, racial profiling, and other violations of Diallo's civil rights. In March 2004, they accepted a $3 million settlement, one of the largest in the City of New York for a single man with no dependents under New York State's "wrongful death law", which limits damages to financial loss by the deceased person's next of kin. Anthony H. Gair, representing the Diallo family, argued that federal common law should apply.

In the early hours of February 4, 1999, an unarmed 23-year-old Guinean student named Amadou Diallo (born September 2, 1975) was fired upon with 41 rounds and shot a total of 19 times by four New York City Police Department plainclothes officers: Sean Carroll, Richard Murphy, Edward McMellon, and Kenneth Boss. Carroll would later claim to have mistaken him for a rape suspect from one year earlier.

In the early morning of February 4, 1999, Diallo was standing near his building after returning from a meal. At about 12:40 a.m., officers Edward McMellon, Sean Carroll, Kenneth Boss and Richard Murphy were looking for an alleged serial rapist in the Soundview section of the Bronx. While driving down Wheeler Avenue, the police officers stopped their unidentified car and interrogated Diallo, who was in front of his apartment. When they ordered Diallo to show his hands, he supposedly ran into the apartment and reached into his pocket to show his wallet. Soon afterwards, assuming Diallo was drawing a firearm, the four officers fired 41 shots with semi-automatic pistols, hitting Diallo 19 times, fatally wounding him. Eyewitness Sherrie Elliott stated that the police continued to shoot even though Diallo was already down.

On March 25, 1999, a Bronx grand jury indicted the four officers on charges of second-degree murder and reckless endangerment. On December 16, a court ordered a change of venue to Albany, New York because of pretrial publicity. On February 25, 2000, after three days of deliberation, a jury composed of four black and eight white jurors acquitted the officers of all charges.

Amadou Diallo was one of four children born to Saikou and Kadiatou Diallo, and part of a historic Fulbe trading family in Guinea. He was born in Sinoe County in Liberia on September 2, 1975, while his father was working there, and while growing up followed his family to Togo, Singapore, Thailand, and back to Guinea. In September 1996, he followed other family members to New York City and started a business with a cousin. According to his family's lawyer he sought to remain in the United States by filing a political asylum application falsely claiming that he was from Mauritania and that his parents had been killed in fighting. He sold video cassettes, gloves, and socks on the sidewalk along 14th Street during the day.