Is evidence of prior criminal conduct admissible in criminal cases?

Evidence Code section 1101, subdivision (b), provides that evidence of prior criminal conduct is admissible when relevant to prove some fact in issue, such as motive, intent, knowledge, identity or common plan or scheme. "[E]vidence related to gang membership is not insulated from the general rule that all relevant evidence is admissible if it is relevant to a material issue in the case other than character, is not more prejudicial than probative, and is not cumulative." (People v. Samaniego (2009) 172 Cal.App.4th 1148, 1167.)