Concerns about the coronavirus tend to fall flat when they’re coming from teachers sunbathing on the beach with a margarita in hand.

So warns the United Teachers Los Angeles’s union members as they begin to plan their tropical spring break trips. “Friendly reminder,” a Facebook post uploaded to a private members-only group says. “If you are planning any trips for spring break, please keep that off social media. It is hard to argue that it is unsafe for in-person instruction if parents and the public see vacation photos and international travel.”