A proposal to build a motorway in Glasgow, Scotland, in the 1970s proved highly controversial. The new road would take a slice of a valued green space in the city, damaging local ecology and amenity, and would widen health inequalities for a disadvantaged local community through pollution and isolation. A lengthy and noisy protest ensued, culminating in the formation of the 'Pollok Free State' in 1995, but it was ultimately unsuccessful. This paper explores the origins and development of the protest movement, drawing attention to the fragility of the alliance created to oppose the motorway, and its shift in ideological position from an initial focus on social justice and favouring more affluent residents, towards environmental degradation instead. It highlights the failure of the established process to address the views of a vulnerable local community adequately, and the frustration that resulted. The National Trust for Scotland, a conservation charity with responsibilities over the land in question, played an important role and faced accusations of 'selling out', which is challenged. It also reveals the deception and duplicity that characterised the approach taken by the lead local authority, and highlights the lasting legacy of the campaign, which lives on long after its failure.