There's been a number of news coverages of this. It's not like it's the biggest operation or anything but they have been trying to plant that seed intentionally.
https://www.sacbee.com/news/local/article264043131.html
https://archive.thinkprogress.org/russia-texas-california-separatism-9809aca9f61d/
https://www.latimes.com/world/europe/la-fg-russia-separatists-snap-story.html