All I have to say about that is if you think everyone's being indoctrinated except you, you're probably wrong.
If the consensus position is broad-scale immigration is a good idea (which seems to be solidly the case in English-speaking politics) then voters who don't like immigration are out of luck.
When I worked on the farm in the 90s, the classic rock in the barn was swapped out for Rush every afternoon. When I go back home, it’s pretty much the same, except most of the farms are out of business.
If you’re from a white collar, suburban background, you just can’t understand. Most media is New York/LA centric, and conservative outlets reject that.
It's easy to identify propaganda in microcosm, it's harder to see the same thing writ large. I find that most white collar suburbanites I meet have a great number of received opinions and rarely examine the sources of such.
Could be I just misinterpreted your comment.