These are a few poems I've stumbled across on the Poetry Out Loud website while helping students search for poems. They're all shorter, but interesting choices for students.
"The Bloody Sire" by Robinson Jeffers (http://www.poetryoutloud.org/poem/11973)
Violence as the source of all morals.
"Chord" by Stuart Dybek (http://www.poetryoutloud.org/poem/30360)
Death as music?
"All Hallows Eve" by Dorothea Tanning (http://www.poetryoutloud.org/poem/243566)
Surprising conflation of werewolves and husbands.
"Late Echo" by John Ashberry (http://poetryoutloud.org/poem/23488)
The necessity of writing about the same things over and over.
"Coda" by Basil Bunting (http://www.poetryoutloud.org/poem/177179)
Blind repetition of history.
"Nude Descending a Staircase" by X J Kennedy (http://poetryoutloud.org/poem/17444)
Classic surreal ekphrasis describing Duchamp's famous painting.