People walk past police patrol vehicles parked at one of the main entrances leading to downtown Manama, Bahrain October 18, 2015. Bahrain has beefed up security around the capital and Shi'ite mosques to provide extra security during the Ashoura period. Ashoura, the most important day in the Shi'ite calendar, commemorates the death of Imam Hussein, grandson of the Prophet Mohammad, in the seventh century battle of Kerbala. REUTERS/Hamad I Mohammed