Brett Hankison, the former officer charged in the botched raid that killed Breonna Taylor, testified Monday in a federal re-trial of his case. ABC News' legal contributor Brian Buckmire reports.

ABC News Legal Contributor Brian Buckmire takes a closer look at some of the top trials and cases going on right now.

The initial federal trial ended in a mistrial last year when the jury reached an impasse because they were not able to reach a unanimous decision.

The initial federal trial ended in a mistrial last year when the jury reached an impasse because they were not able to reach a unanimous decision.

A judge denied a motion to introduce prior “bad acts” committed by Brett Hankison in the case regarding the night Breonna Taylor was killed in a botched 2020 police raid.

The federal indictment came after Hankison was acquitted of state charges in the death of Breonna Taylor.

A mistrial was declared in the federal case against former officer Brett Hankison who was charged with violating the civil rights of Breonna Taylor, her boyfriend and their neighbors.

Federal authorities found that police in the city were more likely to stop Black drivers than white ones for the same traffic violations.

Attorney Kimberly Wehle breaks down a Justice Department report finding police in Louisville, Kentucky, engaged in a pattern of discriminatory policing.

ABC News contributors Brian Buckmire and Bob Boyce join ABC News Live to discuss the Justice Department's probe into the Louisville Police Department's conduct stemming from Breonna Taylor's death.

The findings revealed that a pattern of several violations occurred, including those that led to the death of Breonna Taylor.

Louisville detective Kelly Goodlett will plead guilty to one count of conspiring to violate the civil rights of Breonna Taylor.

The Department of Justice filed charges Thursday against four former and current Louisville police officers in connection with the death of Breonna Taylor.

Four current and former police officers are facing federal civil rights charges in connection with the shooting death of Breonna Taylor.

Attorney General Merrick Garland announced federal charges against four current and former Louisville police officers in connection with the death of Breonna Taylor in 2020.

The Department of Justice has charged four current and former Kentucky police officers with civil rights violations in the death of Breonna Taylor, a Black woman shot to death in her home.

The Justice Department has filed civil rights violations charges in connection with a 2020 raid that killed Breonna Taylor.

Criminal defense attorney Bernarda Villalona discusses charges against four current and former officers related to the death of Breonna Taylor, who was killed in a botched police raid in March 2020.

Relatives of Jacob Blake and Breonna Taylor were arrested Wednesday in Akron, Ohio, in connection with protests over Jayland Walker's death.

Two years after Breonna Taylor was shot and killed by police, her mother met with Department of Justice officials, urging federal charges against the officers.

Two years after Breonna Taylor was shot and killed by police, her mother met with Department of Justice officials, urging federal charges against the officers.

Hankison was not charged with shooting Taylor.

AAA says the average gas prices in four states have topped $4 per gallon in the days since the U.S. and European countries cut off Russian oil suppliers.

The ex-cop who was executing a “no-knock” search warrant at Breonna Taylor’s home is now on trial. ABC News’ Mona Kosar Abdi has more from a survivor of that terrifying night.

Wednesday marked the start of the trial for Louisville, Kentucky, police officer Brett Hankison, who is charged in connection to the incident where Breonna Taylor was killed.

ABC News’ Linsey Davis speaks with civil rights attorney Channa Lloyd about the trial of the ex-officer charged in the raid that killed Breonna Taylor, and the latest on the George Floyd trial.

The trial began Wednesday for Brett Hankison, the only officer charged in connection with the raid that killed Breonna Taylor in 2020.

Former Kentucky police officer Brett Hankison is charged with firing into a neighboring apartment while serving a "no-knock" warrant on Taylor's apartment on March 13, 2020.

Trial begins Wednesday for Brett Hankison, the only officer charged in connection with the raid that killed Breonna Taylor.

The trial begins today for former Kentucky police officer Brett Hankison who was involved in the raid that killed Breonna Taylor on March 13, 2020.

Jury selection is set to begin in the trial of Brett Hankison, who charged in the shooting at Breonna Taylor's apartment complex.

Jury selection has been rescheduled in the trial of officer involved in Breonna Taylor's death.

An attorney for the Taylor family sued Louisville Metro Police claiming they may have given the public "misinformation" about the existence of body camera footage.

Louisville officers shouldn't have fired a single shot in Breonna Taylor's home, a report says.

Sgt. Jonathan Mattingly, the Louisville police officer shot in the leg during the raid at Breonna Taylor's home, says the "time has come" to leave.

The Justice Department has launched an investigation into the policing practices of the Louisville PD, from use of force to search warrants, in the wake of the fatal shooting of Breonna Taylor.

The investigation will determine if the police department "engages in a pattern or practice of violations of the Constitution or federal law."

The criminal trial for former Louisville police officer Brett Hankison, one of the cops involved in the fatal killing of Breonna Taylor, has been delayed to next year.

News of the forthcoming book sparked immediate backlash on social media.

A judge has rejected moving the trial location for the only police officer tried in the killing of Breonna Taylor.

Kenneth Walker, the boyfriend of Breonna Taylor, has filed a federal lawsuit against the Louisville Metro Police Department.

A year after her death, protesters take to the streets to demand justice for Breonna Taylor

Taylor was shot and killed in her home during a botched police raid and her mother says she will not stop seeking justice.

On the one-year anniversary of Breonna Taylor's death in Louisville, Kentucky, activists say there's still no justice in her death.

Family and friends gathered at Jefferson Square Park in Louisville, Kentucky, to honor Breonna Taylor on the one-year anniversary of her death.

Taylor’s mother, Tamika Palmer, and family attorney Lonita Baker reflect on the past year and discuss where the case stands now.

Breonna Taylor was shot inside her home in the early hours of March 13, 2020.

A lawmaker in Kentucky introduced three police conduct bills drafted in the wake of Breonna Taylor's death.

Louisville police officer Myles Cosgrove and Det. Joshua Jaynes were both involved in the Breonna Taylor case.

The attorneys for former detectives Myles Cosgrove and Joshua Jaynes said they were both notified of their termination from the Louisville Metro Police Department. Both have the chance to appeal.