This pie chart visualizes speaker demographics, displaying the distribution of counts by sex. Each slice is colored via `d3.scaleOrdinal` and drawn with `d3.arc`. The legend on the right, built with SVG `rect` and `text` elements, shows each category, its percentage of the total, and the raw count in thousands. Data is loaded from a CSV file using `d3.csv`, with values aggregated and formatted using `d3.format` for display.