California law does.
FTA: After his employers Top Dog restaurant, in Berkeley, were alerted that White attended the rally, he was fired
California Labor Code § 1102
No employer shall coerce or influence or attempt to coerce or influence his employees through or by means of threat of discharge or loss of employment to adopt or follow or refrain from adopting or following any particular course or line of political action or political activity.
https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=LAB§ionNum=1102
You are right.
But that’s California law, not the Civil Rights Act.
Under California Law, Mr. White may have a case in an Alameda County courtroom.