YCP Schmidt Library

Who are these people?
Photographs taken at the same event--looks like a debate, doesn't it? - appear in the 1982 yearbook on pages 2 and 3. It's unfortunate that there are no captions in that year's Horizon, because your YCP Archives would like to identify the occasion and the folks in it for digitization. We all think that the individuals on the right are students and those on the left are visitors to the campus. Anyone out there who might have more of a clue than we do?