I think that's a different question than the point I was trying to make. By all means, educating people as a way to "de-program" and shield them from propaganda is probably the most effective defense, followed by going after the propagandists themselves.
But however you go about trying to fix those systemic issues, it's important to remember that falling for propaganda isn't solely an individual failing. Intelligent and powerful people have been attacking education and unbiased news sources (among other things) for decades, precisely with the goal of making people more susceptible to their propaganda. Maybe they should know better, but a working class person, whose main focus is feeding and housing their family, is at a severe disadvantage in an information war.