Most understand that while we are free to speak our minds most times, there are limits. You can't just yell "fire" in a crowded movie house, to use an old example.
There is actually no universally accepted definition of 'Freedom of Speech' that is applied within the United States of America. The idea is not clearly defined even within the Constitution itself. Issues relating to free speech have been debated and the courts have ruled on these issues almost since the Bill of Rights was added.
That 'Bill of Rights', for those who may require a brief civics lesson, are the first ten 'amendments' to the originally approved U.S. Constitution.
The very first amendment reads: "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."
As explained in "The Heritage Guide to the Constitution":
"The Founding generation undoubtedly believed deeply in the freedom of speech and of the press, but then, as now, these general terms were understood quite differently by different people. Many people did not think about their precise meanings until a concrete controversy arose, and when a controversy did arise, the analysis was often influenced by people's political interests as much as by their honest constitutional understanding."


