Earlier quoted context omitted.
Propaganda is used because it works and scale ends up changing type. Consider the difference from 1 dead cell vs 1 million dead cells at the tip of your finger vs 1 billion dead cells in your arm.
but look at how you're framing it. the undesirable speech isn't a disease the body has, it's a part of the body. we are the collective, even the gross parts. if we want to change what we don't like, we do it with competing ideas, not by cutting them off
PS: There is a huge difference between blowing things that actually happened out of proportion to support an argument and saying anything that someone might believe.