Relatives of a slain teacher mark the tenth anniversary of the Columbine shooting tragedy by standing vigil at the Columbine Memorial near Littleton, Colorado.

• 一名遇害教师的亲属在美国科罗拉多州利特尔顿市哥伦拜恩中学枪击事件十周年之际以守夜形式悼念他们的家人。