Security ... think about it!
Adult assailants have killed eight children and injured at least 58 in recent weeks. On Friday, as Shanghai kicked off its World's Fair, a farmer in Shandong province hit and injured five pre-school children with a hammer, and then burned himself to death. In the single worst attack, a former doctor stabbed eight children to death March 23 in southern Fujian province. He was executed April 28.
