Hyderabad, Aug. 27 -- More than 20 actors known for roles in Marvel films and related franchises have joined the "Free Marwan Now" campaign, calling for the release of 67-year-old Palestinian leader Marwan Barghouti, who has been held in an Israeli prison since 2002.

The campaign, launched by Barghouti's family and supporters, has attracted backing from more than 200 figures from film, music, literature and other cultural fields. In a statement, the signatories expressed "grave concern" over his continued imprisonment, alleged violent mistreatment and denial of legal rights.

"We call upon the United Nations and the Governments of the World to actively seek the release of Marwan Barghouti from Israeli prison," the statement said.

The ac...