This black hat pie chart visualizes three movie categories—Action, SciFi, and Comedy—with data values of 20, 40, and 10, but displays deliberately misleading percentage labels (49%, 60%, 22%) to illustrate deceptive visualization practices. The D3 v4 code uses `d3.pie()` with `d3.entries()` to compute slice arcs, `d3.arc()` to generate SVG paths, and `d3.scaleOrdinal()` with the `schemeSet3` color palette for fill colors. Text labels are positioned using the arc generator’s `centroid` method, with an overall title added via a separate SVG text element.