Democratic presidential nominee Hillary Clinton tours a small business, Mojave Electric, in Las Vegas on Aug. 4. (Melina Mara/The Washington Post)

LAS VEGAS — Several Secret Service agents scrambled to the stage as a group of animal rights activists began heckling Hillary Clinton at a rally in Las Vegas on Thursday afternoon.

Four agents rushed to surround Clinton onstage as a female protester breached the barrier around the stage. She was immediately stopped by another agent and did not appear to have ever reached the stage.

The activists carried signs that said “Until Every Animal Is Free.”

As the protesters chanted, Clinton paused her remarks and attempted to read the signs. An agent who had come onstage told her to continue speaking.

“You’re okay,” the agent said. “Keep talking. We’ll handle it. We’re not going anywhere. Keep talking, ma’am.”

Clinton chuckled and said, “Okay, we’re going to keep talking.”

“Apparently, these people are here to protest Trump,” she said. “Because Trump and his kids have killed a lot of animals, so thank you for making that point.”

Several people were soon escorted out by Secret Service agents and police.