"Say no to Roe!", chanted more than 100 people at a rally outside state parliament on April 22.
The rally was organised to oppose a five-kilometre freeway extension (Roe stage 8) between the Kwinana Freeway and Stock Road in Melville, south of Perth.
Speakers said the proposed extension was expensive, unnecessary and environmentally destructive. It would desecrate Noongar sacred sites and threaten the endangered species.