This has been said many times: when Cho shot people at VA Tech, guns were banned on the campus.
The antigun nuts are always demanding "COMMON-SENSE" gun control laws. By now, after all the school shootings where guns were banned, isn't it common-sense a gun law will not be obeyed by a person intending to murder someone with a gun ?
More evidence this shooting was deliberately instigated. It's the easiest thing to incite a mentally ill person to harm others....It has been reported that the college psychiatrist who was treating the suspect (Holmes) had notified a "threat assessment team" that she was alarmed by his behavior; but nothing was done.