This pie chart displays the distribution of insurance complaints by complaint type. It uses a D3.js SVG rendering to create a circular visualization with colored segments and labels. The code loads data from a CSV file hosted on a GitHub Gist, then uses `d3.rollup` to count complaints per type, `d3.pie` to generate the pie geometry, and `d3.arc` to draw the arcs. Each slice is filled with a color from `d3.schemeCategory10`, and text labels are positioned at the arc centroids.