An Asian-American student at northwest suburban Cary-Grove High School was arrested and charged with disorderly conduct over what he wrote in a homework essay that was apparently very violent but not aimed at anyone or anything in specific. The kid is a straight-A student with no known history of violence, so the question -- which will no doubt be argued in court -- is whether he was really a threat or if this is an overreaction in the wake of the Virginia Tech massacre.