It looks like this stuff is not really about the banana peel incident itself, rather than it exposing a poor state of race relations at the University of Mississippi sororities and fraternities that is easily inflamed by an act that is seen as racist, whether or not that was the intent.
It also looks like the state of race relations was poor enough that the subsequent discussion may have failed to make any improvement, or made it worse, possibly due to insufficient diplomatic skill or hardened viewpoints that leave little room for constructive discussion.