This video uses the sound of ship engines to explain what Dr. Leticia Nieto called "The Rank Machine," those social and cultural mechanisms that set up in- and outgroups in society. The Rank Machine is impersonal and sets up categories of privileged and oppressed persons and communities.
I would encourage you to explore the work of Dr. Nieto and her work, primarily through her book Beyond Inclusion, Beyond Empowerment: beyondinclusionbeyondempowerment.com/