One of the more complete accounts of the man and events leading up to the trajedy can be found here:
http://www.cleveland.com/news/plaind...5719257251.xml
Many people believe there is a very fine line between "social normalcy" and "the dark side" in most of us, if not all of us. Sometimes it takes a freight-train to move a person to violence, other times in another situation we might be moved by an unintentional nudge.