Hillary Clinton Surrounded by Secret Service at Rally After Protester Breaks Past Barricades

— -- Hillary Clinton was surrounded by Secret Service agents Wednesday afternoon after a protester broke past barricades separating the Democratic nominee from the audience at a campaign stop in Des Moines, Iowa.

Agents tackled the protester, who wore a shirt that read "Animal liberation now" and is a member of the animal rights organization Direct Action Everywhere, in a buffer zone surrounding the stage.

The protester, identified afterward as Kelsey Atkinson of Chicago, was then led out of the gymnasium where the rally was held.

It was the second time in less than a week that Clinton's security detail came to her aid. Last Thursday in Las Vegas, a group of protesters also from Direct Action Everywhere attempted to enter the area around the stage, prompting agents to move to her side.

Clinton continued her remarks uninterrupted as attendees behind the stage rose to witness the commotion.

Later during the event, another contingent of Direct Action Everywhere protesters held a sign that repeated the "Animal liberation now" demand. The group was removed from the event without incident.

Clinton's safety was in the news on Tuesday after a Donald Trump speech in which he said that "Second Amendment people" could do something about her Supreme Court nominations if she is elected president.

ABC's Josh Haskell and Liz Kreutz contributed to this report.