A police officer speaks to Zaynab al-Khawaja, the daughter of Human Rights activist, Abdulhadi al-Khawaja, after she refused to leave after a sit-in at a roundabout in Budaiya Highway west of Manama, in this December 15, 2011 file photo. Opposition to Gulf Arab governments comes from a variety of groups -- disgruntled Shi'ite Muslims alleging discrimination in many walks of life, Sunni Muslim unemployed youth demanding jobs, human rights and anti-corruption campaigners, liberals seeking a more open society and more accountable government and Islamists calling for stricter adherence to religion. To match Feature GULF-RIGHTS/REUTERS/Hamad I Mohammed/Files (BAHRAIN - Tags: CIVIL UNREST POLITICS SOCIETY)