Why is this work political? What purpose does it serve?

Please watch the video below.
https://www.youtube.com/watch?v=RfXad3HVox4&t=1s

Instructions
Think about the YouTube video you watched, Cases for Political Art. Now is your turn to research a political artwork of importance (Please do not research a piece that was shown in the video).
Briefly research the piece, and discuss it in your writing. Make sure to answer the following questions: Why is this work political? What purpose does it serve?
Writing should be a minimum of 500 words. Make sure to include at least one source with your writing, and properly cite it.