(December 2, 2015, 12:52 PM EST) -- NEW ORLEANS — A trial judge did not err in allowing the introduction of evidence that a murder was gang-related, a Louisiana appeals panel ruled Nov. 25 (State of Louisiana v. Robert T. Gray, No. 2014-KA-1213, La. App., 4th Cir.; 2015 La. App. LEXIS 2396)....