Censorship and book burning are not identical. Regulation and censorship are not identical. Requiring a surgeon general's warning on cigarette advertisements is not censorship, for example. The government preventing a newpaper from from publishing an op-ed in favor of smoking, or consuming large amounts of alcohol while pregnant, etc. would be censorship, true. Would it be as morally reprehensible as the book burnings of history? Probably not. Would it be wrong? Maybe, I don't know.
