Many people, places and events are purposely overlooked in the history taught in schools and universities. This is done to marginalize and dehumanize specific groups of people. To say that this strategy very effective is a an understatement Shining a light on these people, places and events a much clearer and more accurate understanding becomes available. This revelation demonstrates that we humans all over this wonderful planet are much more alike than we are different. The goal is to reduce the impact of racism everywhere.
He has several talks around this subject that vary in length 10min 30 min or one hour keynote based on what is required. They can be delivered in person or virtually.