"I disapprove of what you say, but I will defend to the death your right to say it."
- Evelyn Beatrice Hall, in a statement often misattributed to Voltaire (although the author rightly viewed this as an accurate paraphrase of Voltaire's sentiments)
The first thing many people think of about the Constitution
The Constitution is filled with passages that are of the utmost importance to this country, from separation of powers in the original Constitution to the Bill of Rights in the amendments. But if I were asked which passage may be the most important to the majority of Americans, my vote might well go to this part of the Bill of Rights: "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." (Source: First Amendment) This is the Constitution's famous First Amendment, and it is indeed the first of the ten amendments that make up our modern "Bill of Rights." It is also the first thing that most people think of when they talk about what's important to them in the Constitution, since the rights that we have are easier to visualize than abstract concepts of separation of powers and checks & balances. (Although these things are vitally important, too, as I detail in another post that I wrote elsewhere.)
United States Bill of Rights
Freedom of speech and freedom of the press, and the right to "petition the government"
The bedrock of American political life today may be the parts about freedom of speech and freedom of the press. These are both forms of a larger concept called "freedom of expression" - one in the spoken form, and the other in the written form. (Although I'm sure that sign language and other gestures would also be considered to be "freedom of speech" under this constitutional definition, and free expression on the Internet has long been held to be included under this amendment as well.) The right to "petition the government for a redress of grievances" is another specific form of this freedom of expression, which is usually written down on paper and other hardcopy material. But it is also sometimes found in the Internet form that I have mentioned as well; and it is well that this freedom of expression (in all of these forms) is protected by the First Amendment. It has been codified as a general principle in all political communication throughout this country - and other communication, for that matter.
Martin Luther King giving his "I Have A Dream" speech, 1963