How does the prosecution in a civil case establish that there is a connection between a group of individuals with a common name, common identifying symbols and a common enemy?

The prosecution has "significant discretion" in how it proves this connection. (Prunty, supra, 62 Cal.4th at p. 67.) The evidence "need not be direct, and it need not show frequent communication or a hierarchical relationship among the members who communicate." (Id. at p. 78.) "But it is not enough . . . that the group simply shares a common name, common identifying symbols, and a common enemy." (Id. at pp. 72, 76.) "Evidence of a common viewpoint also fails to show that subsets have any other

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relationship that unites them." (Id. at p. 75; see People v. Williams (2008) 167 Cal.App.4th 983, 988.)