She was heard shouting messages in favor of abortion rights through a megaphone.
However, before the activist could end a sentence a Secret Service agent in a police jacket seized her and pinned her onto the street.
America's abortion divide was sparked by the leak last month of a draft Supreme Court opinion indicating it will overturn the landmark abortions ruling Roe v Wade.
ROSIE O'DONNELL TURNS TIKTOK THERAPIST, GIVES MICHAEL COHEN PUBLIC PEP TALK
The 5-4 vote saw five of the six Republican-appointed justices side with the state of Mississippi in the case Dobbs v. Jackson Women's Health.
Mississippi asked the court to lower the abortion limit to 15 weeks before requesting the scuttling of those protections, granted by Roe v Wade, altogether.
The young protestor seemed to have been radicalized by that news, grappling with the agent and pulling off his hat and glasses. Another officer came along and pinned her down.
WATCH: EVEN CNN CAN'T BELIEVE WHAT A LIAR MICHAEL COHEN IS!
The woman was then cuffed and arrested.
She was heard saying: "An abortion ban will not stop abortions - only safe ones."
A LEGEND'S VIEW: DAME JUDI DENCH BLASTS OVER-CAUTIOUS CULTURE
"Get the f*** off of me!"
Secret Service chief of communications Anthony Guglielmi said: Shortly after 5pm, an adult female entered a restricted roadway along a motorcade route on Chick Hearn Ct in Los Angeles.
"As the woman approached passing vehicles, a United States Secret Service agent swiftly removed her from the roadway and placed her into custody."
SHOCKING DETAILS EMERGE IN MYSTERY SURROUNDS BOATING ACCIDENT THAT CLAIMED TEEN BALLERINA’S LIFE
"There was no impact to the motorcade movement or our protectees. Our investigation into this incident is ongoing."
GLOVES OFF! INSULTS FLY AS AOC AND MTG TRADE BARBS IN MUST-SEE CONGRESSIONAL MELTDOWN
The pro-choice Biden administration is in favor of abortion rights as the Supreme Court reportedly mulls overturning Roe v Wade.
FROM FRONTLINE TO HOME TERROR: HOW PUTIN’S WAR MACHINE IS CREATING DOMESTIC NIGHTMARES
The landmark 1973 court decision legalized abortions across America - but is now reportedly in danger.
Biden told Jimmy Kimmel late Wednesday that Democrats must "legislate"' to preserve women's rights in the event the Supreme Court overturns the ruling.
RFK JR. TO BIDEN AND TRUMP: ‘MAKE ROOM, BOYS, I’M COMING IN!’
He explained: "If [the court's rumored to overturn] occurs, I think we will have to legislate it. We're looking into it right now."
"It's just ridiculous, in my view. I don't think the country will stand for it."
IF BIDEN'S BORDER IS "SECURE," THEN WHY IS THE FBI ISSUING THIS ALARMING ALERT?
"It's going to cause a mini-revolution and they're going to vote a lot of these folks out of office."
UNBELIEVABLE ACT OF COURAGE: UFC FIGHTER SWAPS GLOVES FOR LIFE JACKETS IN EMOTIONAL RESCUE MISSION
It came as a heavily armed 26-year-old man was detained Wednesday near Supreme Court Justice Brett Kavanaugh's house.
He supposedly told authorities he wanted to kill the conservative jurist and then himself.
The attempted murderer was identified as Nicholas John Roske of Simi Valley, California.
Discover alternative ideas that will make you think
Engage in mind bending debate
Earn points, rise in rank, have fun
