Vincent Namatjira, Western Aranda people, Australia in Colour, 2021, National Gallery of Australia, Kamberri/Canberra, purchased in celebration of the National Gallery of Australia’s 40th anniversary, 2022, image courtesy Iwantja arts, Courtesy of the artist and Iwantja Arts, photo: Iwantja Arts © Vincent Namatjira/Copyright Agency Aussies love to criticise successful people. It is called “cutting down tall poppies”, a national pastime often referred to by the Australianism Tall Poppy Syndrome. It was no surprise then that Australia’s richest person, Gina Rinehart, eventually became a target o…