The moral principle that prefers letting people have their say to shutting them up applies to us all. But things like the US 1st Amendment is an actual laws th

The moral principle that prefers letting people have their say to shutting them up applies to us all. But things like the US 1st Amendment is an actual laws that can be enforced by courts, and American courts have mostly developed good jurisprudence about it. That includes applying it mostly to governments -- for reasons that sanerj goes into in detail. The "mostly" is interesting here. There was a case of a woman handing out leaflets in a town where all the land was owned by one company. The US courts ruled (rightly, I think) that the company was not allowed to stop her. Today, private enterprises like YouTube and Facebook are being used as if they were public services and are in a position to censor. So I don't rule out something like the company-town rule forcing internet giants respect free speech. But realistically, I don't see todays political culture doing that even-handedly. In fact I see it being far more likely to force these companies to censor.