All these issues have something in common: discrimination. Discrimination against a different gender, discrimination against a different race, and discrimination against people “who are different from us.”
The main topic of “Killers of the Flower Moon” is also discrimination: systemic discrimination against the native American Indians that occurred only one century ago.
When discussing how colonists from Europe seized land from the native American Indians, I had always assumed that these stories took place in the century after Columbus “discovered” the North American continent. I’ve never thought that such oppression continued to happen in the past century.