Poetry (Themes of Blackmail or Extortion)

I am looking for a poem with themes of extortion, blackmail, or some kind of legal battle, athough any suggestions of poets or poems would be helpful.

any kind of interesting or good poetry links.

The one catch is that it must be written by a published poet.

any replies apreciated.
Thanks

B_Black

May we know why you’re looking?

It’s for an english assignment, (the actual assignment is using a theme from the poem to write a story).
But what i was really looking for here were poems that people knew, or some recommendations of good poems.