At least one California lawyer thinks that this kind of firing over a call for a change in labor practices is illegal: https://www.cnbc.com/2017/08/07/it-may-b

At least one California lawyer thinks that this kind of firing over a call for a change in labor practices is illegal: https://www.cnbc.com/2017/08/07/it-may-be-illegal-for-google-to-punish-engineer-over-anti-diversity-memo-commentary.html https://www.cnbc.com/2017/08/07/it-may-be-illegal-for-google... > First, federal labor law bars even non-union employers like Google from punishing an employee for communicating with fellow employees about improving working conditions. > Second... California law prohibits employers from threatening to fire employees to get them to adopt or refrain from adopting a particular political course of action. > Third, the engineer complained in parts of his memo about company policies that he believes violate employment discrimination laws... It is unlawful for an employer to discipline an employee for challenging conduct that the employee reasonably believed to be discriminatory, even when a court later determines the conduct was not actually prohibited by the discrimination laws.