However, Nader has written extensively about "harmony ideology," the ideology centered around the belief that the existence of conflict is necessarily a bad or dysfunctional thing and that a healthy society is one that achieves harmony between people and minimizes conflict and confrontation. She has argued in her book "Harmony Ideology" that harmony ideology has been spread amongst colonized peoples around the world by missionaries prior to (and facilitating) their military colonization and that the Zapotec used it in a "counter-hegemonic" way by maintaining the appearance of harmony (while in practice engaging in a great deal of litigation) in order to prevent the Mexican government from interfering with their relative autonomy. Nader has also argued that harmony ideology has been an important basis for unsubstantiated ideas that have developed in the United States since the 1960s about a "litigation explosion" and for the development of Alternative Dispute Resolution (ADR) as a method for removing so-called "garbage cases" (for instance, the then newly appearing civil rights cases of the 1960s) from the courtroom into an arena that emphasizes harmony, compromise and the language of therapy over talk of injustice.