Laid-off employees who hung a U.S. flag upside-down at Yosemite National Park say the action was a call to protect the nation's public lands.

A group of workers at California's Yosemite National Park positioned the U.S. flag on Saturday near the Horsetail Fall​ where crowds gather to witness Yosemite's annual firefall​.

Organizers said the inverted flag, historically used as a sign of distress, was meant to draw attention to the Trump administration’s cuts to the National Park Service.