Also very dark in tone is the thought-provoking short story Hardfought, also by Greg Bear, well worth a read.
Seems like this would be a law against propoganda.... which is a great idea, isn't it?
We have libel and anti-defamation laws. How is this any different?
Domestic propaganda would not be covered by this law.
With no foreign ideas for competition, each country would intensify its efforts to brainwash its own citizens in whatever way it sees fit. (see: 1984)
"Consider a spherical bear, in simple harmonic motion..." -- Professor in the UCB physics department