* The pay gap between public sector workers and private sector workers continues to grow. Many public sector workers are now in the top 10% of income earners, and they number in the millions. Their political power is also greater than the sum of their wealth, because of their numbers. Each one has enough financial interest in the unions' agenda succeeding to potentially engage in PR/lobbying for that cause. Thus they have the critical mass of supporters to shape narratives. Seeing kids talk about how much they hate Trump - something they learned from their unionized teachers - drives that home.

* Pensions for public sector workers are bankrupting states, yet there is no political force capable of scaling them back. The kind of job security they gain through their collective bargaining agreement is also degrading the quality of the public service, in public education:

https://academic.oup.com/qje/article/111/3/671/1839935?login...

And policing:

https://academic.oup.com/jleo/advance-article/doi/10.1093/jl...

And every other public sector. The inexorable rise of social spending stems from the growing power of public sector unions:

https://ourworldindata.org/grapher/social-spending-oecd-long...

The work forces of media outlets have their own guilds, e.g.:

https://nytimesguild.org/

Which combined with left-wing labor laws, means they receive the benefit of barriers to competition from other workers who may want their jobs. Thus they have a financial conflict of interest in how they cover the news, to favor the left-wing political narratives over anything favorable to the concept of a free market and contract rights.