You can find "End of a Discussion with a Jailer" in the anthology, The Space between Our Footsteps, by Naomi Shihab Nye (New York: Simon and Schuster, 1998). Samih Al-Qasim is featured in the PBS Online NewsHour poetry series web pages.
"Poem for the Young White Man Who Asked Me How I, an Intelligent, Well-Read Person, Could Believe in the War between Races" and "Animal Liberation" are from the anthology, From Totems To Hip-Hop: A Multicultural Anthology of Poetry Across the Americas, 1900-2002, edited by Ishmael Reed (New York: Thunder's Mouth Press, 2003). Poets.org has a short biography of Lorna Dee Cervantes.
Black History Now has biographical information on Whitney Young.
Go to Unitarian Universalist Animal Ministry for more information on Henry Bergh.