An organizer of civil rights boycotts during his life, Martin Luther King Jr. is now inspiring a raft of them, 22 years after his death. Two weeks ago, when Arizona voters rejected the creation of a paid state holiday to honor King, the National Football League said it would begin scouting out-of-state locations to replace Phoenix as the site of the 1993 Super Bowl. Last week the list of potential boycotters grew longer with the addition of a heavyweight name: the National League of Cities announced that it would reconsider holding its 1991 convention in Phoenix.
To avert damage to the...