What is an an appropriate EAW exception that the employee in the scenario below could reasonably argue to save their job.

Scenario 1:JoAnn, a manager, started a blog on the company website for employee grievances and problems. She noticed that a worker was protesting that allegedly no Asian American employees had gotten a raise in two years at the company. Christine, the employee, also criticized how much CEO Elon had made last year and how he was "out of touch" with the realities of his employees. JoAnn reminded Christine that she was an employee-at-will. The next day, Christine talked to her fellow co-workers about forming a union. JoAnn fired Christine, and Christine is suing for wrongful termination.