... in historical authoritarian regimes, perhaps that was the most explicit form. But the most effective propaganda is what is considered ideology by the mainst

... in historical authoritarian regimes, perhaps that was the most explicit form. But the most effective propaganda is what is considered ideology by the mainstream -- i.e., defining the boundary of the Overton window. See as a simple example the claim that stimulus payouts will de facto lead to inflation, or the implications in the shares of coverage of Trump's various lawsuits vs that focused on Biden's family. In all cases, there is something left unsaid: an assumed, placed perspective that undergirds the analysis of and conclusions from whatever facts are presented. There, the meme (anti-meme?) at the heart of the deception lies.