Waving red and white Bahraini flags and holding pictures of jailed Shiite activist Abdulhadi al-Khawaja, who is on hunger strike, the protesters called for the ouster of the kingdom’s prime minister — prince Khalifa bin Salman Al-Khalifa, in office since 1971.

Sunday’s protest was the first in a week of daily demonstrations and sit-ins called by Al-Wefaq, Bahrain’s largest Shiite bloc, planned to last through the end of the controversial Grand Prix race scheduled for April 22.