Richard D. Wolff

here is a link: https://www.youtube.com/watch?v=YJkajOPgkhw&index=1&list=PLF08E81711A0D23B1

This documentary talks about all of the most amazing concepts with real world examples all condensed in a 16-part video. I highly recommend giving it a watch, I think it will inevitably give you some ideas to talk about at your next weekly update or monthly update.