During a May Day protest in Indonesia last week, a group of policewomen performed "Gangnam Style" as a way to keep the crowd calm and happy.

Last Wednesday about 5,000 protesters gathered in the Indonesian city of Surabaya in eastern Java to voice outrage over low salaries and poor working conditions.

But the Surabaya rally had a much different vibe than others held throughout the country when 80 female police officers broke out into a performance of "Gangnam Style."

The officers reportedly had practiced their routine for three days in preparation for the labor protests last Wednesday.

The officers appeared before the crowd of thousands in their standard-issue uniforms and dark sunglasses and did a choreographed routine to Korean rapper Psy's international mega-hit.

The protesters cheered as the ladies did their version of Psy's signature horse dance and many in the crowd actually joined in.

"I think it really helped keep everyone calm and happy," said Elly Wahyuningtyas, the head of the area police to the Agence France Presse after the protest.

"The crowd went wild," she continued. "They were so happy, and it was a great feeling to get them excited."

Due to the fantastic crowd response to the policewomen's "Gangnam Style" surprise, they obliged the protesters and performed it a second time as well.

"They were all so beautiful," added Wahyuningtyas.

You can watch the video of the Indonesian policewomen doing "Gangnam Style" below: