Islamic State group says it acted in revenge for US strikes against it and threatens to kill another US journalist.
Demonstrators say they will persist until white police officer is charged over killing of unarmed black teenager.
Government calls 9pm-6am curfew and says it is considering even tougher restrictions on movements as deaths mount.
At least 18 die in Hiroshima as average rainfall for the whole of August falls on the city overnight.
Show Highlights
Rebel Architecture19 Aug 2014 08:49 GMT
Can Spanish self-build legend Santiago Cirugeda turn an abandoned factory into a vibrant cultural centre?
Witness18 Aug 2014 13:03 GMT
Three Syrian children seek refuge over the Turkish border where teachers try to help them cope with the trauma of war.
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