"Hum, I do not have a wall around my house. I have a fence."
Hum, sucks for you.
That is a GOVERNMENT designed fence and what makes you think a GOVERNMENT designed WALL will be any different.
Probably be slopped on each side like the pyramids and have hand holds and foot holes for the handicapped. ADA compliant and all that BS
If you look at the fence the girls are crawling on the left, it is clean. Now the one on the right where the man and woman and one other person are sitting on top there is wire behind it. See there is your foot and hand holds. This is why the fence or wall needs embedded glass or Constantin wire in a V shape on top. Then there needs to be two fences
The wire up the side is to keep drugs from being pushed through