Brown v. State, 300 Ga. 446

On September 21, 2012, Curtis “CJ” Jordan (a Bloods affiliate) was shot and killed in an apartment complex after earlier taunting between groups; eyewitnesses identified Ramel Brown as the shooter with a shotgun.
Brown was indicted on counts including malice murder, felony murder, aggravated assault, firearm-related offenses, and criminal street gang activity; he was convicted on all counts at trial.
The State presented gang-related internet images (screenshots from YouTube, Facebook, Twitter) and testimony from Officer Kimberly Underwood, an accepted gang expert, to support a Young Choppa Fam (YCF) membership theory.
The trial court later granted Brown’s motion for a new trial solely on the criminal street gang activity count, finding the internet exhibits were not properly authenticated; the State nolle prossed that count thereafter.
The trial court denied a new trial on the remaining counts; Brown appealed, arguing the improperly admitted gang exhibits (and a prior gang-related conviction admitted at trial) required reversal of all convictions.
The Supreme Court of Georgia affirmed, finding the unauthenticated exhibits and the prior conviction (admitted under former OCGA § 16-15-9) either harmless or properly limited in use, and that the non-gang evidence of guilt was overwhelming.

Issue	Brown's Argument	State's Argument	Held
Admission of unauthenticated internet exhibits used to prove criminal gang activity	Admission of those exhibits was improper and requires reversal of all convictions	Any error was limited to the gang count and did not affect other convictions because non-gang evidence was overwhelming	Error (assumed) was harmless as to non-gang convictions; convictions affirmed
Effect of granting new trial on gang count on remaining convictions	New trial on gang count means tainted evidence contaminated all convictions	The gang evidence did not bear on eyewitness identifications and shooting evidence	Court found it highly probable the error did not contribute to verdicts on other counts
Admissibility of Brown’s prior conviction for gang activity	Prior conviction should not have been admitted or it prejudiced other counts	Prior conviction was admissible under former OCGA § 16-15-9 for proving gang existence; jury was instructed as to limited use	Admission did not require reversal of non-gang convictions; jury presumed to follow limiting instruction
Sufficiency of evidence for murder and related offenses	Convictions unsupported if gang evidence excluded	Eyewitness testimony independently established Brown as shooter	Evidence sufficient beyond a reasonable doubt; convictions stand

Jackson v. Virginia, 443 U.S. 307 (standard for sufficiency of the evidence)
Smith v. State, 299 Ga. 424 (Georgia harmless-error analysis under OCGA § 24-1-103(a))
Dennis v. State, 263 Ga. 257 (presumption that juries follow limiting instructions)
Malcolm v. State, 263 Ga. 369 (vacatur of felony-murder verdicts by operation of law)