Coerced is the operative word here. Employers don't have to accommodate your political beliefs (outside of what the law requires). If you and your friends have enough power, you can try and wield it. Buy shares and get your voice heard at the stockholders meeting. Your mileage may vary. Not everyone has the coercive power of say, Elon Musk.

This person sacrificed their job to draw attention to their pet issue. What did they expect to happen? Google was going to stop the event and sit down with the employee and negotiate? Google has a disruptive employee, that is costing them more money than they are making them, and so got rid of them. No ones rights were violated.