As Karl Marx remains deeply important, even today, this short video looks into the fundamentals of Marxism. It introduces the different class structures that exist in society, the conflicts that exist between them and the disparate nature of their lives.
I think this video particularly suits the needs for Exploring Economics as it assumes absolutely nothing of the viewer and almost starts from "first principles" by giving a crisp introduction to Marxism. It essentially gives an overview of Marxism by dispelling misconceptions.