Retaliation Against Asian Students in the US ?

Just now Dian Sawyer of ABC and other TV sources reported there is a widespread fear griping all US campus. Last night CNN also reported that most Korean students at VT left in fear of retaliation, even though they are not that kind of type----Cho is isolated incident. But the rumor or deliberate racial blaming create nervousness among Korean students, and Chinese students on all other universities across the US. Right now the East Asian parents, who have kids at the US campus, have reasons to be anxious if their kids could be retaliated.