"All opponents of trans rights are on the wrong side of history, just as history has imposed harsh and unforgiving judgments on those who opposed gay rights in the past. The rights of gay men, lesbians and bisexuals were won by building coalitions, ranging from trans people to 'cis' straight people. Solidarity – based on the principle of "an injury to one is an injury to all" – is a precondition of social change. Trans people must be the key voices in the struggle of emancipation. To be an ally is to listen and learn."