A multi-pie chart visualization displays the distribution of movie genres across five rating categories, from below 5.0 to above 8.5. Each pie chart represents one rating bracket, with slices colored by genre and labeled with genre names. The code loads CSV data via `d3.csv` and uses `d3.pie` with `d3.arc` to generate the slices, rendering SVG graphics with `d3.v7`. Categories are processed into separate datasets before calling a `drawPieChart` function for each.