Veterans swarmed the World War II, Vietnam and Lincoln memorials. They removed the barrycades from all of the memorials, starting with the WWII Memorial. From there, the veterans tore the barrycades down at the Vietnam Memorial before moving on to liberating the Lincoln Memorial.
Police were present and attempted to set the removed barrycades back into place. But the volunteers made a human chain, singing the National Anthem, and prevented police from putting the barrycades back into place. The veterans eventually moved some of the barrycades over to the White House, so their namesake could see them.
Veterans also captured the paper shutdown signs from barrycades, posed for photos with them, and took them home as spoils.
And not a NSPS clown-in-armor yelling "Leave this area or else!" in sight.
I have an image of a conversation:
"Start clearing those people out of there! And put the barricades back up!"
"And what if they refuse to leave?"
"Then start arresting them!"
"Are you out of your mind?"