And some people think the Muslims are backward. It sounds to me like they are the only ones doing any thinking.

"Isolating parts of Baghdad with barbed wire and concrete barriers will inflict social and economic damage and it will lead to more sectarian tension," it said. "This measure will harm the residents and it will have a negative impact on the areas instead of solving the problems." - The Sunni Iraqi Islamic Party

...and these were the people they were supposedly protecting by building the wall.

I agree. There needs to be an investigation. Who ordered it and who was contracted to build it?