Walls - Good Or Bad ???

The US seems to think walls are "bad". Examples:

• Great Wall of China
• Berlin Wall
• Trump's Wall

But apparently some walls are considered to be "good". Examples:

• Moroccan Western Sahara Wall
• All of Israel's Walls, including this one - https://www.almasdarnews.com/article/israel-continues-to-build-wall-along-lebanese-border/

Q: Why the difference? Isn't the current dogma that walls are bad while bridges are good?

A: Bridges are for looting, while walls are for protecting. Of course, "protecting" often is just another word for apartheid, but let's not quibble about semantics.

And if the truth be told, the only thing the US is protecting is the ability of the ultra rich to loot the rest of the world.