ential. Thus, freedom of expression is an end in itself -- and as such, deserves society's greatest protection. It is vital to the attainment and advancement of knowledge, and the search for the truth. The eminent 19th-century writer and civil libertarian, John Stuart Mill, contended that enlightened judgment is possible only if one considers all facts and ideas, from whatever source, and tests one's own conclusions against opposing views. Therefore, all points of view -- even those that are "bad" or socially harmful -- should be represented in society's "marketplace of ideas."It is necessary to our system of self-government and gives the American people a "checking function" against government excess and corruption. If the American people are to be the masters of their fate and of their elected government, they must be well-informed and have access to all information, ideas and points of view. Mass ignorance is a breeding ground for oppression and tyranny. Beginning in the 1980's, religious fundamentalists and some parents' groups have waged a persistent campaign to limit the variety of cultural messages available to American youth by attacking the content of some of the music industry's creative products. These attacks have taken numerous forms, including a call by the Parents' Music Resource Center (PMRC) for the labeling of recordings whose themes or imagery relate to sexuality, violence, drug or alcohol use, suicide or the "occult," and prosecutions of record companies and store owners for producing or selling albums that contain controversial songs. After years of pressure from the PMRC and a series of Senate hearings in 1985, the Recording Industry Association of America (RIAA) introduced, in 1990, a uniform labeling system using the logo, "Parental Advisory - Explicit Lyrics." The RIAA initiated this system without providing record companies with any standards, criteria or guidelines for determining whic...