Seung-Hui Cho, who committed the Virginia Tech massacre in 2007, had been diagnosed with severe anxiety disorder as a child and placed under treatment.
But Virginia Tech was prohibited from being told about Cho's mental health problems because of federal privacy laws.
At college, Cho engaged in behavior even more bizarre than the average college student. He stalked three women and, at one point, went totally silent, refusing to speak even to his roommates. He was involuntarily committed to a mental institution for one night and then unaccountably unleashed on the public, whereupon he proceeded to engage in the deadliest mass shooting by an individual in U.S. history.
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