All my Trump neighbors are rental tenants so they get shuffled in and out every year by their landlords. A few MAGA banner fliers as well as a few families with small kids all got kicked out my neighborhood this last year for Sale signs to go up.
They were tricked by a propaganda machine. They may have been willing participants but had they known everything they never would have voted against their own interests. Yet every country in the western hemisphere, South America, Africa, Asia, and well everywhere doesn't have anti propaganda laws. If you're rich you can buy influence in any neo liberal country. Why is that?
How do you construct anti-propaganda laws that can't be used by bad actors to silence dissent? Genuine question if you have an answer but I don't think anyone actually does. The only actual counter to propaganda is quality education, which is where the US has been failing dramatically.
So far all anti propaganda laws were passed in totalitarian states to suppress dissidents. But I think a good start would be to look at pre-existing limitations on free speech. Can you shout "fire" in a crowded theater just for funsies? No? Then we've already got a public safety caveat in our right to free speech. So you can't say something that will kill people IF IT IS A LIE. There are also time place and manner restrictions on free speech. So we agree there is a time and place where you can criticize the state. So we sort of believe that during public emergencies, such as during a pandemic, you cannot spread lies about the pandemic.