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The US wanted this border wall mural taken down. Instead, a group of veterans repainted it.

Tijuana(CNN) A group of deported US veterans gathered Saturday at Friendship Park in Tijuana, Mexico, before Memorial Day to repaint a mural of an upside-down American flag. The mural, faded and covered in graffiti since it first went up in 2013, is the centerpiece of the park, which sits at the edge of the US-Mexico border, where a border wall juts out into the Pacific.

An upside-down flag is a sign of distress, and the crosses in place of stars are symbols of those who die trying to cross the border, said Amos Gregory, the mural's artist and a Navy veteran who works with the deported vets. A lot of people don't realize US veterans, if they are not citizens, can get deported.

"We're touching it up," Gregory said of the mural. "We try to do it at least yearly, to get down here together."

They planned to repaint it last month, but that was put on hold after the US Border Patrol indicated it was considering whether to remove or alter Gregory's mural. Though on the Mexican side of the wall, it's on US property, one of multiple layers of fences the United States has up around the area, and Border Patrol received a complaint.

This upside down flag mural was painted on the Mexican side of the border wall by Amos Gregory, an artist and veteran who served in the Navy from 1988 to 1994, to honor U.S. vets who have been deported and can't return to the country they fought for. Every year around Memorial Day, a group of deported vets come to touch the mural up, giving it a fresh coat of paint and covering over graffiti.

"We're back here doing this regularly scheduled painting, but we have this backdrop now," Gregory said. He said he thinks they're in the clear after Border Patrol didn't do anything following a 48-hour window in which the mural was supposed to be gone.

So the deported vets who gathered got to work repainting. Jose Cardenas, who was drafted out of high school and served in the Army's 82 Airborne Division from 1970 to 1972, was one of them. The reason they take care of the mural is because it is a vehicle for getting their message out, he said.

Happy Memorial Day, from the deported U.S. veterans mural on the border wall in Tijuana. . One of the vets who came to repaint the mural, Jose Cardenas, told me they come at least once a year to fix it up because want it to look its best for people who visit from around the world. . "People from the United States and people from all over, they come here, they take pictures, that way we can let everybody know that we are Americans that got deported," he said. A lot of people don't believe that's possible, he said. . 📸: @nickstonephoto

"We try to keep this alive," Cardenas said. "That's why we come every year and we do it because people from the United States and people from all over, they come up here, they take pictures. That way we can let everybody know that we are American veterans that got deported."

On Sunday, after the mural was touched up, they had a flag ceremony for Enrique Salas, a deported vet who was killed a month ago in a car accident. Salas was brought back to the US to receive care at a VA hospital, but died within 48 hours. His sister, who lives in California, was given the flag.

"After you die, you become American because they send you back to the United States," Cardenas said. "We don't want to go up there dead; we want to go up there alive."

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