DHAKA, July 4, 2016 -- Bangladeshi social activists hold candles in memory of victims killed in an attack in Dhaka's diplomatic enclave Gulshan, Bangladesh, July 3, 2016. With all the national flags at government and semi-government offices and foreign missions down at half-mast, Bangladesh mourned on Sunday the deaths of victims of the country's first-ever hostage crisis involving militants. (Xinhua)