Sunday Mail: THE controversial Hindmarsh Island Bridge will host a silent vigil on the plight of the River Murray, when up to 10,000 people bear witness to the trickling flow. Organisers are calling for anyone who cares about the Murray to come to the bridge on Sunday, August 10, for a mass visual demonstration of public anger over the river’s fate. The bridge, once the focus of indigenous “secret women’s business” arguments, now is a graphic symbol of the river’s woes with its …