SpaceX workers who complained about Elon Musk's tweets claim they were fired

SpaceX executives illegally fired nine workers who objected to CEO Elon Musk's tweets, a complaint filed this week with the nation's labor board alleges. 

After a group of workers this summer complained that Musk's frequent tweeting of insults, sexual puns and political statements reflected badly on the space exploration company, executives targeted the employees for dismissal, the workers charge. According to the workers, five of them were fired immediately and four more were let go over the ensuing two months. 

Now, lawyers for eight of the SpaceX employees have filed a formal complaint with the National Labor Relations Board seeking to get their jobs back.