As massive protests over the police killing of George Floyd raged outside of the White House, across the nation’s capital, and around the United States on Sunday, the external floodlights that typically keep the White House illuminated at night were shut off.

It is not clear why the White House lights were cut, but critics viewed the move as symbolic of the country’s lack of leadership during a time of nationwide sorrow, anger, and crisis.

Mass demonstrations against Floyd’s killing at the hands of Minneapolis police officers spread quickly across Washington, D.C. Sunday, leading Mayor Muriel Bowser to activate the National Guard and impose a citywide curfew from 11 pm ET to 6 am ET.

The protests outside of the White House only continued to escalate as Bowser’s curfew approached, with police firing tear gas and rubber bullets at violent demonstrators who gathered to demand that the officers responsible for Floyd’s killing be held accountable.

President Donald Trump has yet to deliver a formal address to the nation on either Floyd’s killing or the nationwide uprising it has sparked