Los Angeles-based productioncompany Participant Productions has acquired all US rights to Juliano Mer Khamis'sactivism documentary and Tribeca winner Arna's Children, and will partner with ThinkFilm on the New Yorkrelease on Oct 8.

The film chronicles Arna MerKhamis, the Jewish-born activist who married a Palestinian Arab and spent herlife campaigning for human rights in the occupied region, where among otherthings she set up a children's theatre group in the Jenin refugee camp.

After her death in 1995, thetheatre struggled to survive but ultimately broke up without her guidance. Thefilm was directed by Arna's son and won the best documentary prize at the 2004Tribeca Film Festival.

"We are proud to be involvedwith Arna's Children, a poignantfilm which promotes social tolerance and critical inter-cultural discussion,"Participant's chief vision officer and senior vice president Chris Adams saidin a statement.

"ThinkFilm's prowess andtrack record in the documentary arena make them the ideal partner for Arna's."

Founded by former eBaypresident Jeff Skoll in January 2004, Participant focuses on socially relevantfeatures and documentaries.

It recently signed atwo-picture deal with Warner Bros on Stephen Gaghan's Syriana starring George Clooney, Matt Damon and Amanda Peet,and Niki Caro's Class Action,which stars Charlize Theron and Frances McDormand.

Previous Participantprojects include IFC Films' American Gun, starring Donald Sutherland, Forest Whitaker and Marcia Gay Harden, anensemble piece about gun proliferation in America.

ThinkFilm recently acquiredNiels Mueller's drama The Assassination Of Richard Nixon starring Sean Penn, Naomi Watts and Don Cheadle;Mark Wexler's documentary Tell Them Who You Are, a documentary about his celebrated cinematographerfather Haskell Wexler; and Susan Kaplan's 'trinogomous' relationshipdocumentary Three of Hearts: A Postmodern Family.