A historical injustice is being discussed in an episode of The Engines of Our Ingenuity. The episode is numbered 3408 and is titled "When Molecules Bump". Further information about this episode can be found through the source.

The title suggests a scientific topic, but details about the historical injustice are not provided. The episode is part of The Engines of Our Ingenuity series, with this particular episode focusing on the topic of molecules bumping, along with a historical injustice.