Protesters affiliated with the "Occupy Wall Street" movement on Wednesday interrupted Republican presidential candidate Newt Gingrich during a speech at the University of Iowa.

"Mic check," the protesters shouted. "We are here to protest your speech today. We object to your callous and arrogant attitude toward poverty and poor people."

The protesters also denounced his "vilification of people as shiftless and unwilling to work" and his "disgusting suggestions that we bring back child labor."

Some of the protesters were escorted out of the room but were not arrested, according to the Los Angeles Times.

The “mic check” is a reference to the system of communication used by the “Occupy Wall Street” protesters in New York City’s Zuccotti Park.

Unable to use microphones because they lack the proper sound permits, the protesters repeat in unison what a speaker says. The speaker begins by saying “mic check.”

The “mic check” later evolved into a form of protest. Wisconsin Gov. Scott Walker, President Barack Obama, Republican strategist Karl Rove, and Republican presidential Ron Paul have all recently been interrupted by the “99 Percent” movement. Gingrich was previously "mic checked" by protesters in Florida and Massachusetts.

Watch video, courtesy of CBS News, below: