Georgia Commons

Supreme Court of Georgia · criminal appeal

State v. Postell

Filed June 16, 2026 · Docket S26A0415

The Supreme Court of Georgia upheld a Bulloch County judge's decision to grant a new trial to a man convicted of murdering his nephew, ruling that evidence of the nephew's violent character and past violent acts should have been allowed at trial.

In plain language

Shannon Postell was convicted by a Bulloch County jury of murder after he shot and killed his nephew, Robert Lawson, during a confrontation outside their family's homes. Postell argued at trial that he acted in self-defense, but the trial judge kept out evidence about Lawson's reputation for violence and specific violent acts Postell knew about, including gang ties and past crimes. After the conviction, the trial judge granted Postell a new trial, ruling that this evidence had been wrongly excluded. The State appealed, arguing the evidence was properly kept out. The Supreme Court of Georgia reviewed the legal question directly rather than deferring to the trial judge, and it agreed that Georgia's evidence rules allowed Postell to present testimony about Lawson's violent reputation and the specific violent acts Postell knew about, because that evidence supported his self-defense claim. The court affirmed the order granting a new trial.

What the court decided

The court held that evidence of a homicide victim's reputation for violence, and specific acts of violence the defendant personally knew about, is admissible to support a self-defense claim, so excluding that evidence at Postell's trial was an abuse of discretion and a new trial was properly granted.

Why it matters

The ruling clarifies that defendants claiming self-defense in Georgia can introduce a victim's reputation for violence and specific violent acts they personally knew about, guiding trial judges statewide on what evidence juries may hear in self-defense murder cases and setting the stage for Postell's retrial.

Outcome

Affirmed

How the court got there

  1. When a trial judge grants a new trial because evidence was wrongly kept out of a criminal trial (a 'special ground'), the Supreme Court of Georgia reviews that legal ruling itself from scratch, rather than simply checking whether the trial judge's decision was reasonable.
  2. Georgia's evidence rules allow a defendant claiming self-defense to offer reputation or opinion testimony about the victim's violent character, because that trait can support the claim that the victim was the aggressor, though the evidence must take the form of reputation or opinion testimony rather than detailed accounts of specific incidents.
  3. Separately, evidence of a victim's specific violent acts can be admitted for a different reason: to show the defendant's own state of mind and whether his fear of the victim was reasonable, but only if the defendant actually knew about those specific acts before he used force.
  4. Because Postell showed he personally knew about his nephew's gang ties, prior crimes, and reputation for violence before the shooting, both his own testimony about those acts and the redacted portions of his police interview should have been allowed under these rules.
  5. Under Georgia's balancing rule for excluding otherwise admissible evidence (Rule 403), courts may only exclude evidence when its risk of unfair prejudice clearly outweighs its value, a high bar that was not met here because the evidence was central to explaining why Postell might reasonably have feared his nephew.
  6. Testimony from Postell's mother and sister could not support the new trial because no one ever told the trial court what that testimony would have said, so there was nothing for the court to have wrongly excluded.

From the opinion

Rule 403 is an extraordinary remedy which the court should invoke sparingly, and the balance should be struck in favor of admissibility.

Bethel · The court explains how narrowly Georgia judges may exclude relevant evidence as unfairly prejudicial.

Topics

  • murder conviction
  • new trial granted
  • self-defense claim
  • victim's violent character
  • evidence rules

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State v. Postell | Georgia Commons