Washington (CNN) -- Hundreds of protesters gathered outside the gates of Quantico Marine Base in Virginia Sunday to protest the treatment of Bradley Manning, who is being held at the base prison on charges that he released classified government documents to WikiLeaks. Daniel Ellsberg, the 1971 Pentagon Papers leaker and Retired U.S. Army Col. Ann Wright who is known for being one of three State Department officials to publicly resign in 2003 as a way to protest the U.S. invasion of Iraq. See a CNN.com exclusive interview with Ellsberg as he talks about his kinship with Manning, and Ellsberg's experiences as an infamous war-time leaker.Hundreds of demonstrators protest the treatment of Army private1971 Pentagon Papers leaker Daniel Ellsberg among the protestersEllsberg and retired Army Col. Ann Wright are among dozens arrested
_, a 23-year-old Army private, is accused of giving WikiLeaks hundreds of thousands of classified military and State Department documents.