How RFK Jr. became associated with a deadly, preventable disease

Rachel Maddow sums up the story of how RFK Jr. is seen as largely responsible for an explosion of measles cases on the island of Samoa after he spread anti-vaccination claims. Brian Deer, author of “The Doctor Who Fooled the World,” joins to discuss. Rachel Maddow sums up the story of how RFK Jr. is seen as largely responsible for an explosion of measles cases on the island of Samoa after he spread anti-vaccination claims. Brian Deer, author of “The Doctor Who Fooled the World,” joins to discuss.  NBC News Science