Bahrain should release protesters-UN rights chief

* Deep mistrust for government among civil society * Impunity for violence, torture an issue GENEVA, Dec 21 (Reuters) - The United Nations' tophuman rights official, Navi Pillay, on Wednesday called onBahrain to release prisoners detained for joining peacefuldemonstrations that swept the Gulf island kingdom earlier thisyear. She also urged the Bahraini government to restore thousandsof people to ...