Open this photo in gallery: Wanda Nanibush, curator of Indigenous Art at the Art Gallery of Ontario, at the gallery in Toronto on Jan. 25.Chris Young/The Canadian Press The Art Gallery of Ontario’s Indigenous curator Wanda Nanibush left her job last week in what the institution calls a mutual decision, following years of outspokenness that caused friction with some at the gallery and in the arts community – which came to a head with the Israel-Hamas war. Ms. Nanibush is a celebrated Anishinaabe curator who joined the AGO in 2016 as the inaugural curator of Indigenous Art and co-head of...