RE: I thought this occurred in 1968 during coverage of the National Democratic Convention in Chicago.
You are right. My mistake. It was a typo, it was August 28,1968 at the Democratic convention in Chicago.
The full debate here:
http://www.youtube.com/watch?v=ZY_nq4tfi24
The episode began at about 10:00 minutes. Today’s debates are tame compared to back then.
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