The entrance to the tower looming over the University of Texas here is inscribed with the Bible verse John 8:32 in massive block letters: “Ye shall know the truth and the truth shall make you free.”
It befits academic life at one of the country’s premier public universities.
But the tower is best known as the perch from which a former Marine sniper carried out what is widely considered the nation’s first mass shooting.
In that sense, the inscription speaks to a different quest for truth: the truth about who killed the killer that August day 50 years ago.
The question still hangs over the man who has long been celebrated as the hero. It hangs...