“California’s litigation privilege is an incredibly powerful tool that effectively immunizes conduct if it is reasonably related to litigation. The litigation privilege protects conduct even if it is ‘alleged to be fraudulent, perjurious, unethical, or even illegal.’ Kashian v. Harriman, 98 Cal.App.4th 892, 920 (2002). The California Supreme Court has acknowledged that application of the privilege to allegedly unlawful conduct ‘necessarily results in some real injuries that go uncompensated’ but acknowledged ‘that is the price that is paid for witnesses who are free from intimidation by the possibility of civil liability for what they say..’ Silberg v. Anderson, 50 Cal.3d 205, 212 (1990) (quoting P rosser, Law of Torts (3d ed. 1964, p. 797); see id. at 213 (‘The principal purpose of section [47(b)] is to afford litigants and witnesses the utmost freedom of access to the courts without fear of being harassed subsequently by derivative tort actions.’ (internal citations omitted). ‘To effectuate its vital purposes, the litigation privilege is held to be absolute in nature.’”