Hong Kong, sandbags stacked to protect a building from air raids

This building is the Supreme Court Building not the Law Courts.  Heavily but neatly sand bagged.  Later used by the Kempeitai for their brutal purposes. 

This practice was repeated during the 67 leftie riots. Many police stations had a chest high sandbag wall similar to this picture outside its main entrance. A police sentry armed with M1 carbine was posted behind the sandbags as an added protection to the station.