For more than half a century, several ideologies have affi xed the word “liberation” to their names. The call for black liberation came out of the ferment of the 1960s, as did the women’s liberation movement. These movements were followed by the gay liberation movement, aboriginal or native peoples’ liberation, liberation theology, and even an increasingly infl uential animal liberation movement. In many respects, of course, these are very different movements with vastly different ideologies. Each has its distinctive arguments and each addresses a particular audience. However, despite their differences, all share common features that mark their respective ideologies as members of an extended family.