Is season 4 of 'The Crown' too close for comfort?

It's a show that like the queen herself needs little introduction: Alison Sargent and Olivia Salazar-Winspear dive into the fourth season of Netflix's drama "The Crown", featuring much-awaited portrayals of Prime Minister Margaret Thatcher and Lady Diana Spencer. As the series gets closer to the current day, some find its depiction of sensitive events hits too close to home. We explore the controversy with the help of history professor Anna Whitelock.