Regardless of political party, most people would agree that the Presidential election year of 2016 rocked most political, social and electoral norms.
But the nation has gone through foundation-rattling turbulence before, and many of the seeds of America today were sewn in the upheaval of 1968. 
It's all documented in the new book, "Playing With Fire:The 1968 Election and the Transformation of American Politics."
This is Jane McMillan's conversation with it's author, MSNBC Host of The Last Word, Lawrence O'Donnell.