Architect Ronald Rael delivered a thought-provoking 10 minute TED talk in Dec. 2018 about borders in general and the Mexico-US border specifically. It's an excellent watch in these complicated times.
Rael built the famous Prada, Marfa store in the middle of nowhere. I've written about Marfa but never understood until now -- with further reading -- that 1) Prada, Marfa is made primarily of dirt; and 2) Prada, Marfa was a deliberate political installation, as well as an art installation in an upscale, educated, artistic place in Texas. You MUST read the next two paragraphs.