(a)
Any person who wears the uniform of a peace officer while engaged in picketing, or other informational activities in a public place relating to a concerted refusal to work, is guilty of a misdemeanor, whether or not the person is a peace officer.(b)
This section shall not be construed to authorize or ratify any picketing or other informational activities not otherwise authorized by law.
Source:
Section 830.95, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PEN§ionNum=830.95..