One tried and true favorite is Horatio at the Bridge usually excerpted from Macauley's longer poem Horatius :
http://www.englishverse.com/poems/horatius
If this is too militant, there are many other poems from the same era positively presenting human virtues, before western civilization descended into multicultural indifference. Some of these are to be found by browsing the works of Arnold, Ruskin, Macauley, Tennyson, Browning, Emerson. Not to be overlooked are poems of an earier generation such as Donne , George Herbert and others.
Thanks. I'll be teaching in one of the most liberal cities in California so I've got to be careful.. I'd love to use "The Charge of the Light Brigade" but am a bit hesitant to ruffle the feathers of peacenik parents.