And there are some poems that transcend boundaries of group (beyond Gay or Straight, Republican or Democrat, Us and Them) and speak to every one of the almost six billion of us - as humans.
Kahlil Gibran's "The Prophet" includes this poem, which does all that, and more:
Love one another, but make not a bond of love:
Let it rather be a moving sea between the shores of your souls.
I can barely express how great I think that is. Awesome.
Here's a pic of the author:
(If you want to know more about him, click on it to link to the Khalil Gibran wikipedia page.)
I found this gem on page 69 of "In Your Eyes: Quotations of Gay Love" Edited by Richard Derus.