"Nothing in the Constitution compels us to listen to or view any
unwanted communication, whatever its merit....The ancient concept that
`a man's home is his castle' into which `not even the king may enter'
has lost none of it vitality....We therefore categorically reject the
argument that a vendor has a right under the Constitution or otherwise
to send unwanted material into the home of another. If this prohibition
operates to impede the flow of even valid ideas, the answer is that no
one has a right to press even `good' ideas on an unwilling recipient.
That we are often `captives' outside the sanctuary of the home and
subject to objectionable speech and other sound does not mean we must be
captives everywhere....The asserted right of a mailer, we repeat, stops
at the outer boundary of every person's domain."
	-- Chief Justice Burger, U.S. Supreme Court
http://www.euro.cauce.org/en/freespeech.html#rowan