(FILES) In a file picture taken on July 28, 2010 pedestrians walk past graffiti on a wall against the country’s controversial tough security law know as Internal Security Act (ISA) in downtown Kuala Lumpur. Malaysian Prime Minister Najib Razak will unveil plans on September 15, 2011, to ease curbs on civil liberties, an official source said, bowing to a key opposition demand as speculation over snap polls mounts. AFP PHOTO / Saeed KHAN