Some civil servants are using whatever levers they have to resist the orders of the world’s richest man, both in public and behind closed doors.

On Monday, thousands of protesters across the country hit the streets to tell Donald Trump and Elon Musk “No kings on Presidents’ Day” in response to the barrage of alarming actions—from legally questionable executive orders to mass firings —taken by the administration since the inauguration.

A tearful executive at the U.S. Internal Revenue Service told staffers on Thursday that about 6,000 employees would be fired.