Professional protesters in keffiyehs Sunday squared off against rejoicing Venezuelans who said the pro-Nicolas Maduro “fools” have no idea what they’re talking about while outside Brooklyn’s federal lock-up.

Several natives of the beleaguered South American nation told The Post they showed up at the Metropolitan Detention Center to take photos and shoot videos for relatives back home — to provide proof that the brutal dictator who terrorized their country for so long is finally behind bars.

“We just wanted to see where he is, if he was locked up,” said Karla Garzon, a 36-year-old tourism worker in Venezuela who spoke over the phone as her city-based friend Melissa showed her and two pals the outside of the ultra-high-security jail.

Pro-Maduro protesters shouting Sunday outside the Brooklyn lock-up where he is being held include familiar faces from anti-Israeli demonstrations. Getty Images

A demonstrator holds Venezuelan and Puerto Rican flags outside the facility where Nicola Maduro is being held. Getty Images

“We’ve been waiting 25 years for this. Now we see it, I can’t believe it,” Garzon said.

Cinthia Davila yelled at the holding facility, “Maduro, you son of a b–ch!

“These people are not from my country,” she said of the pro-Maduro mob gathered outside the prison. “These people don’t know my country.”

Maduro and his wife Cilia Flores were nabbed by US forces in a deadly pre-dawn lightning strike in Caracas on Saturday that was authorized by President Trump. The pair was hauled to New York City, where they face a federal indictment for narcotrafficking and other charges.

Venezuelan Cinthia Davila holds her son as she stops by the jail to celebrate Maduro’s capture. Michael Nigro for NY Post

Many of Sunday’s roughly 130 agitators gathered outside the MDC calling for Maduro to be released were familiar faces from unrelated anti-Israeli protests at Big Apple Ivy League campuses such as Columbia University.

Some wore keffiyehs and surgical masks, spewed rhetoric about “Palestine” and held up professionally printed signs that were distributed to others in the crowd as they tried to gain traction for themselves on a new front.

“Most dangerous thing in the world today is Donald Trump and the USA!” a demonstrator shouted.

The smaller group of Venezuelan migrants nearby shook their heads.

“These people don’t know what they are talking about,” said a 47-year-old native of Caracas who only gave her name as Magdalys. “They don’t know what Maduro has done. They don’t know who, what they are talking about.”

Maduro is a “son of a b–ch,” Davila said. NY Post/Kevin Sheehan

Pro-Maduro demonstrators hold professionally printed signs, and some wear keffiyehs. Michael Nigro for NY Post

Another Caracas native, Manuel, 38, called the counter-protestors “fools.

“They know nothing about Maduro,” he said. “I don’t know why they are here. They are just strange and stupid.”

Garzon added, “So many people had to leave [Venezuela under Maduro], die crossing the jungle to get freedom.

“How many people disappeared? So many disappeared! Went to prison for being against Maduro. He gave arms to the drug lords and attacked people for saying anything against him. Students murdered when they went to protest.”

Cars passing by the federal lockup honked horns and waved Venezuelan flags in celebration of Maduro’s ouster.

“We are so excited,” said Hernan, 52, of Valencia in Venezuela. “We are all celebrating. We have not slept since we heard.”

Dozens of demonstrators rally for Maduro as Venezuelans call them “fools.” Michael Nigro for NY Post

Maduro and Flores were transferred to the federal facility under heavy guard overnight and are expected to face a judge Monday to be arraigned on the sweeping indictment against them.

Trump said over the weekend that the US will temporarily “run” Venezuela, although the country’s future remains uncertain as Maduro’s vice president appears to have taken power.

“I feel a lot of things right now,” said Davila, who had her two young children with her. “I feel joy but also fear. There are still a lot of bad people in Venezuela that can still do a lot of harm.”