Graves (1902-1978), who attempted to gestate the fundamental principles of aesthetic order in visual design, in his book, The Art of Color and Design (1941), defined the elements of design as line, direction, shape, size, texture, value, and color, concluding that "these elements are the materials from which all .
The artists were inspired by the rebirth of the Classical ideas and styles. That is why it is called the Renaissance which means rebirth. They artists, philosophers and others looked back to the time of Classical Greeks civilization. They emulated the architecture, the sculputure, the philosphy (Neo-Platonism). The subject matter of most art of the day was confined to mythology (Greek gods and goddesses and their stories) because that was what they saw in the Greek (Roman too) works. Hellenistic Greek styles correspond to the Baroque or late Renaissance which incorporated movement and emotion into the style.
Sorry I'm bad at restating hahaha
Hope this helps ;)
"Tank Man" and "A Man on the Moon" Are some images that come to my mind when I think about powerful images.