Examples of dark poetry are "For Whom the Bell Tolls," "O Captain, My Captain," "A Poison Tree" and "Annabel Lee." Dark poetry deals with death or deep sadness or sometimes the darkness that can reside in a human heart.
"For Whom the Bell Tolls" is a poem by John Donne in which he speaks of the connection human beings have to one another and how what happens to one person impacts the rest of mankind. He starts out saying that "No man is an island/ Entire of itself." He goes on to speak of how he is lessened by the passing of any other person and ends with the foreboding words, "send not to know/ For whom the bell tolls/ It tolls for thee."
Walt Whitman's poem "O Captain, My Captain" is about a ship coming victoriously into port to a cheering crowd. Sadly, however, the ship's captain lies dead on the deck. The narrator of the poem cannot celebrate the victory for mourning that his captain is not there to enjoy it. Walt Whitman wrote this poem shortly after President Lincoln died.
"A Poison Tree" by William Blake is about someone who did not forgive his neighbor and let the wound grow and fester until he poisoned an apple that his neighbor took. The narrator said he was glad to see his foe dead.
Edgar Allan Poe's "Annabel Lee" is about the love of a young couple that met with tragedy when she died. Though he misses her greatly, he says death did not take her completely from him because he visits with her each night in his dreams.