For this month’s “Econ Extra Credit” project, we’re watching Martin Scorsese’s new feature film, “Killers of the Flower Moon.” The film shows how white settlers terrorized members of the Osage Nation, violently attempting to acquire their oil resources. We’re joined by professor and Osage Nation citizen Jean Dennison to define key concepts in the film, including headrights and guardianships. But first: What’s up with Speaker Mike Johnson’s financial disclosure?