Explain how the nation experienced “political and social upheaval” (848) during the 1960s, including the ways in which political upheaval intertwined with social upheaval during the decade. Bring up specific examples to illustrate this. Additionally, explain how this reflects the sentiment voiced by Paul Cowan that the United States was “a nation that seemed to be filled with energy and decency ... beneath the dull, conformist façade of the Eisenhower years” (820).