One of the most revolutionary paintings was done in the 1500s by Dutch and Flemish painter Pieter Bruegel the Elder. Why? According to this [video](https://aeon.co/videos/why-european-artists-shifted-their-focus-from-power-to-peasants-in-the-16th-century) it's because it was the first popular painting to use regular people, just being themselves as it's subject matter. Super interesting 5 minute clip.