In the United States, where speech is given the most protection among Western countries, there has been a recent effort to carve out a potentially large category to which the First Amendment would not apply. While we have always prosecuted people who lie to achieve financial or other benefits, some argue that the government can outlaw any lie, regardless of whether the liar secured any economic gain.

Free speech is dying in the Western world. While most people still enjoy considerable freedom of expression, this right, once a near-absolute, has become less defined and less dependable for those espousing controversial social, political or religious views. The decline of free speech has come not from any single blow but rather from thousands of paper cuts of well-intentioned exceptions designed to maintain social harmony.

In the face of the violence that frequently results from anti-religious expression, some world leaders seem to be losing their patience with free speech. After a video called “Innocence of Muslims” appeared on YouTube and sparked violent protests in several Muslim nations last month, U.N. Secretary General Ban Ki-moon warned that “when some people use this freedom of expression to provoke or humiliate some others’ values and beliefs, then this cannot be protected.”

It appears that the one thing modern society can no longer tolerate is intolerance. As Australian Prime Minister Julia Gillard put it in her recent speech before the United Nations, “Our tolerance must never extend to tolerating religious hatred.”

A willingness to confine free speech in the name of social pluralism can be seen at various levels of authority and government. In February, for instance, Pennsylvania Judge Mark Martin heard a case in which a Muslim man was charged with attacking an atheist marching in a Halloween parade as a “zombie Muhammed.” Martin castigated not the defendant but the victim, Ernie Perce, lecturing him that “our forefathers intended to use the First Amendment so we can speak with our mind, not to piss off other people and cultures — which is what you did.”

Of course, free speech is often precisely about pissing off other people — challenging social taboos or political values.

This was evident in recent days when courts in Washington and New York ruled that transit authorities could not prevent or delay the posting of a controversial ad that says: “In any war between the civilized man and the savage, support the civilized man. Support Israel. Defeat jihad.”

When U.S. District Judge Rosemary Collyer said the government could not bar the ad simply because it could upset some Metro riders, the ruling prompted calls for new limits on such speech. And in New York, the Metropolitan Transportation Authority responded by unanimously passing a new regulation banning any message that it considers likely to “incite” others or cause some “other immediate breach of the peace.”

Such efforts focus not on the right to speak but on the possible reaction to speech — a fundamental change in the treatment of free speech in the West. The much-misconstrued statement of Justice Oliver Wendell Holmes that free speech does not give you the right to shout fire in a crowded theater is now being used to curtail speech that might provoke a violence-prone minority. Our entire society is being treated as a crowded theater, and talking about whole subjects is now akin to shouting “fire!”

The new restrictions are forcing people to meet the demands of the lowest common denominator of accepted speech, usually using one of four rationales.

Speech is blasphemous

This is the oldest threat to free speech, but it has experienced something of a comeback in the 21st century. After protests erupted throughout the Muslim world in 2005 over Danish cartoons depicting the prophet Muhammad, Western countries publicly professed fealty to free speech, yet quietly cracked down on anti-religious expression. Religious critics in France, Britain, Italy and other countries have found themselves under criminal investigation as threats to public safety. In France, actress and animal rights activist Brigitte Bardot has been fined several times for comments about how Muslims are undermining French culture. And just last month, a Greek atheist was arrested for insulting a famous monk by making his name sound like that of a pasta dish.

Some Western countries have classic blasphemy laws — such as Ireland, which in 2009 criminalized the “publication or utterance of blasphemous matter” deemed “grossly abusive or insulting in relation to matters held sacred by any religion.” The Russian Duma recently proposed a law against “insulting religious beliefs.” Other countries allow the arrest of people who threaten strife by criticizing religions or religious leaders. In Britain, for instance, a 15-year-old girl was arrested two years agofor burning a Koran.

Western governments seem to be sending the message that free speech rights will not protect you — as shown clearly last month by the images of Nakoula Basseley Nakoula, the YouTube filmmaker, being carted away in California on suspicion of probation violations. Dutch politician Geert Wilders went through years of litigation before he was acquitted last year on charges of insulting Islam by voicing anti-Islamic views. In the Netherlandsand Italy, cartoonists and comedians have been charged with insulting religion through caricatures or jokes.

Even the Obama administration supported the passage of a resolution in the U.N. Human Rights Council to create an international standard restricting some anti-religious speech (its full name: “Combating Intolerance, Negative Stereotyping and Stigmatization of, and Discrimination, Incitement to Violence and Violence Against, Persons Based on Religion or Belief”). Egypt’s U.N. ambassador heralded the resolution as exposing the “true nature” of free speech and recognizing that “freedom of expression has been sometimes misused” to insult religion.

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