Because Jon, those of us who remember that day so vividly want to pay tribute to the man we loved, and felt like was a personal friend. As with November 22, 1963 when John F. Kennedy was assassinated, the date of December 8, 1980 is firmly entrenched in my brain. I can remember exactly where I was, and what my thoughts were when I found out about both events. I can still see the faces of the people who I encountered on both days and exactly what I was doing, and the television and radios report about both.
I don't think of it as not letting these men "rest in peace", but rather as a tribute to their lives, and pay our respects by remembering them on the day when I was shocked and cried, as if I lost a member of my immediate family. That was the effect that these men had on me.