Censorship is when the information is banned completely, by the government, and is actually made illegal.
Censorship is when someone is prevented by someone else to express their opinion. The claim that censorship can only come from the government is a sophism which Americans, of all people, should be more properly intellectually equiped to see through, seeing as their country has a rich history of extensive and successful censorship endavours originating entirely from private initiatives, from the Hays Code to the campaigns of harassment to get political or ideological enemies fired, uninvited from conferences or de facto banned from major newspapers.
Freedom of speech doesn't start and end with the first amendment.
"Freedom of expression constitutes one of the essential foundations of […] a [democratic] society, one of the basic conditions for its progress and for the development of every man. […] it is applicable not only to "information" or "ideas" that are favourably received or regarded as inoffensive or as a matter of indifference, but also to those that offend, shock or disturb the State or any sector of the population. Such are the demands of that pluralism, tolerance and broadmindedness without which there is no "democratic society"."
That's a ruling of the European Court of Human Rights in 1976 (Handyside v United Kingdom).
Of course I've now talked with people about freedom of speech and censorship long enough that I understand where the real source of disagreement is and why we can't understand each other even though we use the same words.
Here's my conclusion: the vast majority of people
love censorship, they just hate the
word "censorship".
People love it when hate-speech is severely punished either by the government or socially, when immoral or pornographic books are banned or burned by viligantes, when whistleblowers get a life sentence for high treason, when people who express opinions unpalatable to a given demographic or interest group get fired from their job or banned from most public events following vile harrasment and doxing campaigns, when small family businesses are forced to closed down and their owners receive death threats because they expressed ideas contra the current political trend. As long as they're on the good side of the flamethrower, really I've met very, very few people who don't effectively support the tools of censorship.
But they hate the
word "censorship", because "censorship" is bad and illiberal and it's what fascists and europeans do [French people, in turn, are absolutely convinced that France is THE country of freedom of speech, absolutely free of any kind of censorship (when French law, in theory, allows pretty much the censoring of just about anything —what is censored and what is not in practice depends on the whims of the power and intelligencia of the moment)].
So people find really convoluted ways to redefine meanings so that they can effectively support censorship without having to
say "I support censorship", which nobody wants to do because that sounds bad. The classic is redifining freedom of speech as "the freedom to say everything except obviously wrong, controversial, hateful or dangerous ideas" (in this case Staline was the greatest libertarian who ever lived), or redefining censorship as only happening when the government is doing it (yeah, and state terrorim doesn't exist either, and waterboarding is not torture) — here's an amusing thing: although censorship in France is part of the law, the vast majority of the speech lawsuits originate from private individuals and groups, who also exist in the US — they just have more legal tool to exert their pressures in France. Here's another amusing thing: first amendment or not, the US still has libel laws; if someone brings a good enough legal case that you insulted them, you can still be legally and officially censored in the US.
Me, I like honnesty, I like frankness, I like candidness. I'd like all the people who think it's a good thing when their enemy's speech is curtailed in any fashion to come out of the wood and say "I support censorship". But I can dream.