What is the test for admitting evidence of a defendant's membership of a criminal gang?

"We review claims regarding a trial court's ruling on the admissibility of evidence for abuse of discretion. [Citations.] Specifically, we will not disturb the trial court's ruling 'except on a showing the trial court exercised its discretion in an arbitrary, capricious, or patently absurd manner that resulted in a manifest miscarriage of justice.' [Citation.]" (People v. Goldsmith (2014) 59 Cal.4th 258, 266.)

The rap evidence was properly admitted. The gang expert explained its relevance to the jury: "The Hispanic gang rap scene is pretty huge now in Southern California. What they do is they rap, meaning write music, regarding . . . their criminal activity, where they're from and what they'll do if you cross them." The rap lyrics "demonstrated his membership in [the Crimies], his loyalty to it, his familiarity with gang culture, and, inferentially, his motive and intent on the day of the [assault]." (People v. Olguin (1994) 31 Cal.App.4th 1355, 1373.)