"When despair for the world ..." launches what is almost certainly the most popular poem (on the internet) by Wendell Berry. I tested this out back in 2009. A quick re-check today produces "about 82,900 results" for "Peace" and "about 18,700 results" for "Manifesto." So it looks like "The Peace of Wild Things" holds an unassailable dominion.
What brought this to mind was a tweet I just found of an Instagram illustration of "The Peace of Wild Things" by Raquel Martinez. I think it is particularly well-done as a triptych.