Evidence of participation in a criminal street gang.

Under existing law, a person who actively participates in any criminal street gang with knowledge that its members engage in, or have engaged in, a pattern of criminal gang activity, and who willfully promotes, furthers, or assists in any felonious criminal conduct by members of that gang is guilty of a crime. Existing law authorizes a court, in its discretion, to exclude evidence if its probative value is substantially outweighed by the probability that its admission will either necessitate undue consumption of time or create substantial danger of undue prejudice, confusing the issues, or misleading the jury.