This is a follow-up to the three-part Texas Standard audio documentary “Searching for the history of the Texas Farm Workers Union.” Check out the whole series here.
Daniel Castro was working at a Louisiana news station in 1977 when the Texas Farm Workers Union passed through on a 1,600-mile march that spanned from the Rio Grande Valley to Washington, D.C.
A fervent believer in political activism since his days documenting social movements in his native Peru and around the world, the photographer and videographer did what his instinct called him to and left his job to follow the union full-time.

“Probably he’s telling people how they needed to be in the march… I can see him pointing his finger. He was always like that. As you could see in the picture, he was a very intense guy,” Mariella Ruiz-Castro said of her late husband, Daniel Castro, who appears in one of the photos. Courtesy of Mariella Ruiz-Castro
“My husband was that type of an individual that he had to be 100% into it. He couldn’t be only a certain percentage and then continue with his life,” said Mariella Ruiz-Castro, Daniel’s wife. “He said that that’s not the way to protest and that’s not the way to look for justice. So he abandoned every single thing, and he went directly to work with them and helped them as much as possible.”
Castro, who later became a longtime professor at Southwestern University until his death in 2015, documented many of the actions the TFWU undertook in the years after the 1977 march, with his images often appearing in the union’s newspaper, El Cuhamil.
But beyond that, Mariella says her late husband – who she described as a street photographer who shot largely in black and white – rarely showcased his images.
So it’s perhaps unsurprising that the negatives Mariella sought out after hearing of the Texas Standard series on the TFWU had largely sat untouched for decades.
“I remembered that I saw them, that I put them in a place in a closet that I have upstairs. And I went there … I found the negatives,” Mariella said. “So that is the second time that I have seen them. And the only reason that I know is because he labeled them. He wrote ‘Texas workers.’ And by looking at them through the light, you know, I saw the picture of Antonio [Orendain] and I said, ‘oh, this is Antonio. This has got to be.’”