Rights and freedoms are not unlimited. Freedom of speech ends at things that put people in danger (e.g. shouting fire in a crowded space). Guns are available pursuant to a well regulated militia (or should be, but let's not open that can of worms).

I'll grant the proactive/reactive in a sort of way. If anyone (not only old people drink the fox news poison) starts up with some hyper racist shit, is restricting them not reactive to their emergent behavior? Would it be that big a stretch to codify the effects of propaganda as a sort of mental injury that needs treated? (Yes it would). Point is, at this point we're splitting this hair rather fine and getting away from the important bits.

So the real way to handle the propaganda is to punish fox and their ilk for being wildly irresponsible and setting up racist fascist bullshit. Corporations are much easier to regulate than individuals (theoretically). They should be sued into the ground for all they've done, but we live in an oligarchy so that's not happening anytime soon. This shower thought emerges because free market capitalism refuses to have any morals whatsoever and people are desperate to stop the big companies from hurting everyone. And the thing that's easiest for everyone to see is the people they love start repeating horrible things and being helpless to pull them out of the echo chamber.

No, the shower thought isn't good. It shouldn't get that far. But right now, the only thing we can affect is the people next to us because the rich are never held accountable, so we're stuck with bad and worse solutions.