We know it is censorship because they're spending $600k to ensure they totally destroy it forever. If it were merely about choosing what kind of art to show on

We know it is censorship because they're spending $600k to ensure they totally destroy it forever. If it were merely about choosing what kind of art to show on the wall, they could simply paint over it for $1k. That's $599,000 that could be used to pay teachers instead being spent to ensure this mural is never seen again.