Hundreds of furloughed federal employees chanting “We want our pay!” marched on the White House on Thursday, the 20th day of a partial government shutdown over U.S. President Donald Trump’s demand for border wall funding.

“Stop the shutdown!” protesters shouted in the bitter cold at the union-organized demonstration that started at the AFL-CIO headquarters and ended in front of 1600 Pennsylvania Avenue, where they hoisted signs reading “Trump: End the Shutdown” and “Not a strike – we want to work.”