Government tyranny? Militias are (in the parlance of our times) here for it.
They'll fight against Border Patrol, and even plot to kill them sometimes, but only when they think they aren't doing enough.
https://www.bbc.com/news/world-us-canada-48029360
https://time.com/6141322/border-vigilantes-militias-us-mexico-immigrants/
https://www.wired.com/story/border-militias-immigrants-trump/
https://www.texastribune.org/2024/02/07/border-el-paso-fbi-investigation/