Cho's macre... when will American society learn to accept others?

I believe Cho killed 32 people because he felt rejected and full of hate. These types of killings will continue unless there is awareness cles in schools and on college campuses to help students become tolerant and accepting of others not like themselves. Cho was short in stature, probably had some communication difficulties in expressing his feelings, and had a troubled family background where his family financially struggled. We have, in America, wrongful expectations of people to be tall, thin, wealthy, and fit into a "social box" we have mentally constructed in our minds.. a box made from the media, the news broadcasting channels, and dominant religious groups (i.e. Xtianity). If we encounter someone "not" like us... or who does not meet our perfect social expectations.. many of us choose to ALIENATE, MAKE FUN OF, HARR, TEASE, OSTRACIZE, OR EVEN HAZE the persons who are different. I believe this lack of tolerance for others is what triggers intense rage & killing sprees.