Hate mail, unofficial bans and Super Bowls: Long journey of the Black QB

In his new book, Jason Reid looks at the often painful - and sometimes triumphant - history of the NFL's most important position

The Guardian caught up with Jason Reid to chat about his new book, which tell the story of the men who laid the foundation for today's Black superstar quarterbacks and how modern players, such as Patrick Mahomes and Lamar Jackson, are navigating the unconscious bias and conscious racism that continue to permeate US society.

Fritz Pollard is a monumental figure in NFL history, as well as in your book. I know you spent time with grandson. Can you explain Pollard's impact on the game?