[2] Sinclair is Head of the Department of Native Studies at the University of Manitoba where he holds the Faculty of Arts Professorship in Indigenous Knowledge and Aesthetics.

In addition, he is a captain with the Mama Bear Clan patrol in North Point Douglas in Winnipeg's inner city.

[6] Sinclair is also a public speaker and media commentator who was recently named to the “Power List” by Maclean’s magazine as one of the most influential individuals in Canada.

He has helped organize Idle No More Winnipeg events[7] and he frequently speaks on Indigenous issues on CTV, CBC and APTN.

He was also previously named one of Monocle Magazine‘s “Canada’s Top 20 Most Influential People.” His book Wînipêk: Visions of Canada from an Indigenous Centre won the Governor General's Award for English-language non-fiction at the 2024 Governor General's Awards.