What is the diameter of that “we” when you say “we”? Your favorite football team? Is it your family? Is it your company? You and your lover? You and your friends? Are they of the same nationality as you? The entire human family? All living things? Galaxy with all its living and non-living things? Or is it the universe?
If you are an artist, you can draw your pictures on paper, canvas, digital screen, plates, seashells, human skin or the street. Yes to street walls and buildings. Considering that a relatively small percentage of humanity regularly looks at art galleries, museums and books on painting; The street is the closest place to life for the artist to touch the souls.