increase in gang membership, and fhe expansion of criminal street gangs’ control of street-level drug sales and collaboration with rival gangs and other criminal organizations. National Gang Intelligence Center, 2011 National Gang Threat Assessment: Emerging Trends 9 (2011). In addition, the Tenth Circuit has found gang membership relevant in drug trafficking cases. See United States v. Sloan, 65 F.3d 149, 151 (10th Cir.1995)(“The government’s evidence showed that these drug distributions in two housing projects in Oklahoma City were a part of the operation of two gangs which apparently had amicably divided up the territory. Gang membership under such circumstances was relevant and mate rial to the crimes charged”). Cf. United States v. Renteria, 720 F.3d 1245, 1256-57 (10th Cir.2013)(<HOLDING>). These authorities support the conclusion that
holding that the district court committed prejudicial error in admitting expert testimony about the structure of drug trafficking organizations because the testimony portrayed the defendant as a member of such an organization and implied the defendant knew the drugs were in his vehicle holding that the district court complied with the requirements of  lb13alb where it made specific references to testimony in the record relating to the scope of the defendants involvement in the drug trafficking conspiracy noted that the relevant testimony was unrefuted and stated that the testimony was internally consistent holding that experts testimony as to aspects of gang culture relevant to the case including requirements of members obedience silence and staunch defense of other gang members and the punishment meted out to a gang member who violates these requirements went to factual matters outside the experience of the average juror holding that it was not plain error for the district court to find the police officers identification of a defendant as a member of the fresno bulldogs gang and testimony about the nature and identifying characteristics of the organization including drug distribution were relevant in a drug conspiracy case holding gang membership admissible because it did not substitute for evidence of actual participation in the drug distribution conspiracy