A wall is suppose to protect a threat from the outside—that is their purpose. But sometimes their purpose is more than that.

  
**Attack on Titan**

\- these gargantuan walls were built to keep out giants called Titans. But they were also made out of >!the biggest of Titans called Colossal Titans!<. That is because >!the king who made them wanted to make sure that his enemies wouldn't dare cross him, otherwise he'll unleash countless, unstoppable Titans to crush the world!<. Not only that, but the walls were also >!made to keep the race that lives inside the wall, Eldians, from leaving their island!<.

  
**Hadestown**

\- in the song "Why Do We Build The Wall," Hades, the ruler, propagandizes his "citizens"  that they build the wall to keep the enemy out. The enemy being >!"poverty"!<. In reality, Hades is >!making his own prisoners build their cage!<. To quote them: "We build the wall to keep us free."

  
**The Berlin Wall**

\- those who were in USSR controlled, impoverished, dirt poor East Berlin kept going to the U.S.A. controlled, economically-stable, capitalist but a utopia in comparison West Berlin. So to stop them from doing that a wall was put in place. The lie that those resided in the fence of smoke and gunfire was to make sure that fascism wouldn't creep its way in. Hundreds died trying to cross that border by guards inside that zone.

The wall is a lie