This example shows a stylized angry face rendered as an SVG, with two eyes and a curved mouth on a red circular head. D3.js v5 manipulates the DOM by selecting the SVG element and appending grouped shapes, including circles for the face and eyes, rectangles for the eyebrows, and a path generated with the `d3.arc` API for the mouth. The code uses explicit attribute setters like `.attr()` to position and style each element, creating a static, geometric portrait.