Walls

Japan, US, UK are surrounded by the sea which became a natural barrier to prevent something harmful and protect their culture and treasury.

Hadrian's Wall was made to define the world between in and outside Roman Empire.

China's Great Wall was made to define between in and outside China.

Berlin Wall was made to define in and outside Capitalist and Communist world.

Wall in West Bank is to define Jewish and Palestinian world.

Wall Street used to be built to protect against the invasion from British Empire.

Fire Wall made by a country to protect their culture and prevent endorsing other cultures without censorship.

Walls are obstacles for those who intend to intrude, however it is a wall to protect their identity.

No one can blame walls.