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BANGKOK, Thailand — Five university students who used the signature three-fingered salute from “The Hunger Games” in front of Thailand’s Prime Minister were detained Wednesday and told they’ll face a charge of breaking martial law, a lawyer said.

The students were taken away after flashing the salute — popularized by the film’s central figure, Katniss Everdeen (played by Jennifer Lawrence) — at a speech in northeastern Thailand by Prime Minister Prayuth Chan-ocha to civil servants, according to Phavinee Chimsri, from the group Thai Lawyers for Human Rights.

At the time, the quintet in Khon Kaen province — about 450 kilometers (280 miles) northeast of Bangkok — was in a line wearing shirts bearing the words “Don’t want a military coup,” Phavinee said.

A Thai government spokesman did not respond to calls for comment on the matter.

But, according to Phavinee, the Khon Kaen University students were taken to a Thai army facility, Camp Sri Patcharin, where they refused to sign an agreement not to participate in political activities. They were released after about eight hours, the lawyer said, but have been asked to come back on the charge that they broke the martial law that’s been in effect in Thailand since Prayuth — then the army’s chief — announced in May the the country had been placed under military control.

Since then, the junta imposed a series of measures purportedly aimed at restoring order and resolving the crisis, including media blackouts, curfews and bans on public assembly.

Yet, the opposition hasn’t gone away.

Hollywood has played a role in part of this movement, thanks in part to protest leader Sombat Boonngamanong. On Twitter and elsewhere, Sombat has often used pop-culture references to spread his messages.

One such reference that appears to have resonated comes from the films based on the book series by Suzanne Collins. Katniss, a teenage girl who competes in a spectacle of blood lust known as the Hunger Games, displays the three-finger gesture, which becomes a symbol of revolution against a tyrannical government.

The third movie installment in the series, “The Hunger Games: Mockingjay – Part 1,” is due to hit theaters in Thailand on Thursday.