A United States Capitol Police officer died on Thursday night from injuries sustained “while physically engaging” with pro-Trump rioters who descended on the U.S. Capitol the day before, the fifth fatality linked to the chaos that engulfed the nation’s capital on Wednesday, according to the authorities.

 

The officer, Brian D. Sicknick, was only the fourth member of the force to be killed in the line of duty since its founding two centuries ago. After the bedlam of Wednesday’s siege and the recriminations that filled the airwaves the next day, a silence descended over the Capitol grounds late Thursday as hundreds of law enforcement officers from scores of agencies lined the streets to pay tribute to their fallen comrade.

 

But the loss of life also underscored the failure of law enforcement agencies to prevent the siege of the Capitol. And with leaders of both political parties calling for investigations, it appeared likely to lead to calls for profound changes to the Capitol Police.

 

The circumstances surrounding Mr. Sicknick’s death were not immediately clear, and the Capitol Police said only that he had “passed away due to injuries sustained while on duty.” At some point in the chaos — with the mob rampaging through the halls of Congress while lawmakers were forced to hide under their desks — he was struck with a fire extinguisher, according to two law enforcement officials.

From 2015:

Republican presidential front-runner Donald Trump on Thursday vowed to issue an executive order to mandate the death penalty for anyone who kills a police officer.  “One of the first things I’d do in terms of executive order, if I win, will be to sign a strong, strong statement that would go out to the country, out to the world, anybody killing a police man, a police woman, a police officer, anybody killing a police officer, the death penalty is going to happen,” he said.