Supporters of Oscar Lopez Rivera, one of the world's longest held political prisoners, marched in solidarity over the Williamsburg Bridge Saturday.
Rivera has been held in U.S. prisons for 32 years.
He is serving time for conspiracy for his involvement in the fight for Puerto Rico's independence.
Saturday's unity march included speeches, chants and music, starting on the Lower East Side and ending in Williamsburg.
The event was part of a nationwide effort to call for Rivera's release.
"We think it's important that after more than 30 years, he be pardoned and be given his liberty to come out and be a free man," said one person.
"He never hurt anyone. He never maimed anyone. There was no violent acts," said another. "He was just a person like George Washington, the statue that's here today in this park, who believed in independence for his homeland."
Rivera refused a pardon offer from President Bill Clinton in 1999 because it wasn't given to all advocates for Puerto Rico's independence.