going through the Stanford libraries' fair use website, i found this interesting snippet of an influential copyright court case from "Hustler Magazine, Inc. v. Moral Majority, Inc." (1985).

Stanford Copyright & Fair Use - Summaries of Fair Use Cases: "Fair use. Publisher Larry Flynt made disparaging statements about the Reverend Jerry Falwell on one page of Hustler magazine. Rev. Falwell made several hundred thousand copies of the page and distributed them as part of a fund-raising effort. Important factors: Rev. Falwell's copying did not diminish the sales of the magazine (since it was already off the market) and would not adversely affect the marketability of back issues. (Hustler Magazine, Inc. v. Moral Majority, Inc., 606 F. Supp. 1526 (C.D. Cal. 1985).)"