Is character evidence admissible to establish criminal propensity?

Character evidence is generally inadmissible to prove a person acted in conformity with it on a specific occasion. ( 1101, subd. (a).) It therefore is inadmissible to establish criminal propensity. (People v. Demetrulias (2006) 39 Cal.4th 1, 14.) It may be admissible, however, where relevant to prove a material fact at issue, for example, motive, opportunity, intent, preparation, plan, knowledge or identity. ( 1101, subd. (b).) "The admissibility of other crimes evidence depends on (1) the materiality of the facts

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