Somehow, everything leads me lately to explore the impact of language learning as a powerful tool, not only for personal enhance but also to prevent racism and sexism. Broaden language lessons beyond the target one helps to raise awareness about its mechanisms for inclusion and exclusion. It also contributes to gain knowledge regarding how commonly shared stories shape our perspectives on different issues such us environment, globalization, economy, health and so on.
This wise thread by Yuliya Komska on twitter contains some valuable insights on that matter.
Furthermore, this very basic NPR essay on code-switching is a good starting point.