He has become the “American Indian” par excellence. In westerns or on our food packaging, the Sioux – and its feathered headdresses – all by itself represents the First Nations in the collective imagination. But how did the stereotype impose itself in our collective imagination? The exhibition “On the trail of the Sioux”, to be discovered at the Musée des Confluences in Lyon, looks back on the making of the image and its consequences on indigenous peoples.