The courtroom fell silent as jurors were handed thick binders of evidence. Inside were grainy surveillance images, fragments of forensic reports, and transcripts of social media posts documents that prosecutors say link Jacksonville rapper Hakeem “Ksoo” Robinson to the murder of a 16-year-old known in the neighborhood simply as “Bibby.”
Adrian Gainer Jr., who friends called Bibby, was killed in February 2019 near the Moncrief and Hilltop areas of Jacksonville. Prosecutors allege Robinson, then a rising drill rapper with ties to the ATK gang, followed the teenager to a shopping plaza and opened fire. The killing, they argue, was part of a cycle of gang retaliation that has fueled deadly violence across the city.
A tweet from X.
Court documents reviewed by local outlets and introduced in hearings describe chilling details. Witnesses told investigators that Robinson and his associates
“waited outside Bibby’s apartment, followed him, and carried out a planned ambush.”
Surveillance footage allegedly shows the shooter standing over the victim. Forensic reports cite a fingerprint on a rifle and hair on a discarded T-shirt.
Adding to the weight of the prosecution’s case is Robinson’s father, Abdul Robinson Sr. Once a leader in ATK, he has agreed to testify against his son. In depositions, he identified Ksoo as the gunman in video evidence. Prosecutors say his cooperation comes in exchange for leniency in his own pending charges.
“This is not about music,”
A state attorney said in court.
“This is about targeted, intentional murder.”
Robinson’s defense team rejects the narrative of gang retaliation. Attorney Chris DeCoste has repeatedly argued that prosecutors are misinterpreting his client’s drill rap lyrics as confessions.
“Rap is art,”
DeCoste told the court.
“When Ksoo raps about violence, he is performing—no different than an actor in a film. To suggest otherwise criminalizes Black expression.”
The defense has also pointed to discrepancies in witness accounts, noting that some descriptions of the shooter’s height around 5’8″ to 5’9″ do not match Robinson, who stands at 6’3″. They argue the forensic links are circumstantial and unreliable.
The Bibby case is not Robinson’s only legal battle. In July 2025, he was convicted of first-degree murder for the killing of 23-year-old Charles “Lil Buck” McCormick, another gang-related shooting captured on dashcam. Prosecutors say the two cases reveal a disturbing pattern.
Yet Robinson’s supporters claim he has been unfairly targeted because of his music. Viral posts on social media allege poor conditions at Duval County Jail, where he has been held in the mental health ward, though official responses to public-records requests have been limited.
Jacksonville has seen a sharp rise in gang-related homicides since 2019, with feuds between ATK and 6Block/KTA linked to numerous killings. Diss tracks and taunts posted online have blurred the line between entertainment and provocation, making the city a national flashpoint in debates over drill rap and public safety.
For Bibby’s family, the tragedy is deeply personal.
“He was just 16,”
one relative said outside court.
“People talk about gangs and music, but we lost a child.”
The outcome of the Bibby trial still pending after six years will test the limits of how courts use rap lyrics and social media as evidence. It will also signal how far prosecutors are willing to go in tying cultural expression to criminal intent.
If convicted, Robinson faces another life sentence. If acquitted, the case may reinforce arguments that art should not be equated with action. Either way, Jacksonville’s communities remain caught between the promise of music and the devastation of violence.
