How a childhood in St. Louis inspired Mr. Johnson of 'Abbott Elementary'

William Stanford Davis, who plays the quick-witted custodian Mr. Johnson on the ABC sitcom “Abbott Elementary,” draws inspiration for the character from his conspiracy theorist grandmother and the observant school custodians of his youth. The St. Louis native shares how his upbringing shapes his approach to Mr. Johnson’s character, how St. Louis prepared him to never stop pursuing his Hollywood dreams, and his goal to give back to the city’s school system.