This chapter analyses the constituencies, forms of mobilisation and solidarity in relation to language rights and language policy at the Federal level in Australia, focusing on the overlapping but different interests between Indigenous and immigrant Australians, specifically non-Anglo migrants. The text is written from 45 years of direct engagement in language policy agitation, advocacy, implementation and analysis, and therefore proceeds as a series of reflections on these relationships, drawn from diary notes, published sources and ongoing professional and personal relationships. In effect, it is a personal account of my two roles in language policy work: activist and analyst, in the formulation of language policy at the Federal level from the mid-1980s. Much of what follows focuses on Indigenous and immigrant perceptions of what language policy is for, whose interests it serves, what kinds of agitation are needed to extract resources and generate supportive policy settings from often hostile or at least non-comprehending public authorities. Some of what united the two constituencies and what divided them is explored and the writing concludes with an assessment of the prospects for a more robust and enduring alliance.