Cal. Penal Code § 616

Every person who intentionally defaces, obliterates, tears down, or destroys any copy or transcript, or extract from or of any law of the United States or of this State, or any proclamation, advertisement, or notification set up at any place in this State, by authority of any law of the United States or of this State, or by order of any Court, before the expiration of the time for which the same was to remain set up, is punishable by fine not less than twenty nor more than one hundred dollars, or by imprisonment in the County Jail not more than one month.