Division and Disillusion Assignment

Instructions:

Carefully read the following question, and submit your answer based on your readings and understanding of the subject.  Your answer should be at least a paragraph in length. Please proofread your submission--points will be deducted for sloppy work.

How did the United States go from an "era of hope" to a period of "division and disillusion" over a short period of time in the mid-1960s?  Identify as many specific reasons as you can.