Where to begin? This week started with the announcement of an official impeachment inquiry and ended with a dizzying flurry of revelations about President Donald Trump's efforts to extort political favors from a foreign government and the White House's attempts to cover it up. Plus, MSNBC host Joy Reid joins us to talk about 2020; her new book, The Man Who Sold America: Trump and the Unraveling of the American Story; and what this administration has done to our country's institutions.