The moves are among the latest corporate blowback on workers following pressure from the Trump administration to fire those who “were caught celebrating the assassination.”

“This behavior is disgusting and they should be fired,” Transportation Secretary Sean Duffy posted on X Saturday. “Any company responsible for the safety of the traveling public cannot tolerate that behavior.”

United Airlines also sent a memo to pilots reminding them of the company’s social media policy. It is not clear if United has terminated or suspended any workers. CNN has reached out to the airline for comment.

“As a good rule of thumb, if something is not appropriate to be said at work, it would also not be appropriate to convey via social media when the comments can be connected to your employment at United Airlines,” the memo to pilots said.