An important distinction in law must be drawn
between rights and obligations. While related concepts, they are not identical.
I have, for example, the right to speak my mind,
free of government censorship in all but a very limited set of situations.
That's enshrined in the First Amendment to the U.S. Constitution, which says in
part, "Congress shall make no law . . . abridging the freedom of speech."
I do not, however, have an obligation or duty to
speak my mind. Under certain circumstances, I may have a duty to tell the truth
about events (as in when I am giving sworn testimony), but in most cases, my
opinion is not something I must share.