Freedom of speech

Apparently there was a cable company that couldn't permit an Anti-Hillary movie to air on their pay-per-view channels because it fell under the time period that makes it subject to campaign finance laws. The Supreme court is now thinking of striking down the law competely, based on it First-Amendment implications.

It is odd how we can say that a film that gets released six months before an election would be okay, while a film that gets released a little closer to the elections should be subject to campaign regulations.

I understand the desire to prevent the nation from becoming a plutocracy, where he who has the most money controls the government. But the justices are right to be concerned about the implications of limiting the publication of free speech. What's the difference between the U.S.'s blocking the publication of campaign ads and China's blocking YouTube? Ultimately, if we can't trust American citizens to make an informed decision while they're being inundated with campaign ads, why do we think we can trust them any more when they're not?