mind of the Virginia Tech shooter

The South Korean student, the perpetrator of the worst campus carnage in US history, left behind a remorseless and macabre signature in the form of videos, photos and words between his twin attacks at the Virginia Polytechnic Institute, according to footage broadcast by NBC.
Apparently after carrying out the first two shootings, Cho Seung-Hui, 23, had enough composure to go to a local post office and mail a package containing audio-video materials to NBC News. According to the postal stamp on the Express Mail Cho mailed at 9.01 a.m. from Blacksburg, some an hour and 45 minutes after a 911 call alerted the police to the first shootings at West Ambler Johnston residence hall.
About 45 minutes later Cho returned to the campus, this time to unleash the kind of violence America is still shuddering from.
Twenty three Quicktime videos and 29 photographs, showing Cho in complete control of his senses, were aimed at telling the world of unspecified wrongs and humiliation he had suffered. NBC News said the videos were shot over at least six days, a testimony to how coldly Cho planned the massacre. It raises the possibility that he might have had some kind of accomplice to help with the package and taking pictures.
The videos and photos showed Cho in various poses such as brandishing a knife near his own throat and pointing a handgun to his own head. One picture shows him tightly holding a hammer. Some of the images show Cho wearing a black T-shirt, a tan vest and a backward baseball cap. In other pictures, he wears a white T-shirt with a black, gun-holster vest.
The purpose of the materials was apparently to underscore his resolve and, in a bizarre way, rationalize what he was about to embark on.
Cho's utterances are mostly meanderings of a deeply disturbed yet remarkably determined mind.
'You had a hundred billion chances and ways to have avoided today,' he says in one clip. 'But you decided to spill my blood. You forced me into a corner and gave me only one option. The decision was yours. Now you have blood on your hands that will never wash off.'
'You just loved crucifying me,' he says in another, 'You loved inducing cancer in my head, terrorizing my heart and ripping my soul all the time.'
Then he rants against those with wealth and material success. 'Do you know what it feels like to be torched alive? Do you know what it feels like to be humiliated?' he wonders.
'You had everything you wanted. Your Mercedes wasn't enough. Your vodka and cognac wasn't enough. Your trust fund wasn't enough. All your debaucheries weren't enough.'
'When the time came I did it, I had to,' he said in one video clip.
Revelations after the killings speak of the 23-year-old student majoring in English being a seriously disturbed man with some highly violent imagery as manifest in a couple of plays he wrote. Many are troubled that despite telltale signs of his worrisome nature neither the authorities at Virginia Tech nor the police took any pre-emptive action on the grounds that he had really not threatened or harmed anyone before the killings. Except for a couple of incidents of stalking fellow female students, Cho has been described as a loner.
Authorities were tight-lipped on the new development, and university officials decided against holding a press conference after the footage was released.
'This may be a very new critical component of this investigation,' State Police Chief Steve Flaherty said at an earlier press conference, which was also cut short.