NEW : Unrest reported in Taiz , Gulf Arab and Susan Rice . UNICEF discusses U.S. . Mercado said more than 80 other children had been injured in beatings , rock-throwings or shootings . The U.N. Security Council voices concern over children 's deaths .
NEW : Unrest reported in Taiz , Gulf Arab and Susan Rice . UNICEF discusses U.S. . The U.N. Security Council voices concern over children 's deaths .