My parents told me a story about some water debacle that happened when they were young that involved ranchers near land LBJ owned getting screwed out of water rights by him and his political cronies that he paid off to file falsified deeds-being ranchers themselves, the family dislike was built a lot on that. I learned to hate him when he dithered on Nam and some of my friends died fighting there.
Some actual skulduggery... I can see how they’d be good and mad, that was not fair.
I read somewhere that the ranchers got their right to water livestock at the river back after the sonafabitch died, but that was an awful lot of years.