As tens of thousands of Australians marched proudly in support of a referendum on an Indigenous Voice last month, an enormous "Vote No" banner was unfurled across the Victoria Bridge in Brisbane. The words were emblazoned across the Aboriginal flag, and Boe Spearim, a Gamilaraay and Kooma man, watched as people took in his message. The October 14 referendum is asking Australians to decide whether to alter the Constitution to create a permanent Indigenous advisory body to advise the federal parliament and the government. Mr Spearim, who is a part of the Treaty Before Voice campaign, says it is critical...