So what you're saying is.... Winona Ryder caused Eric Harris and Dylan Klebold to kill their peers? Because I think the nonstop bullying of two mentally ill, chemically unbalanced teenage boys who never received adequate treatment caused it. A "normal" person copes in a more acceptable way, these boys didn't have that coping mechanism so they did it their own way, which seemed okay to do due to their undiagnosed illness.
Harris had been diagnosed and was on meds.
http://www.ssristories.com/show.php?item=190