This example displays a 3D bar chart using Three.js to visualize mass shooting data from a CSV file. It shows the total fatalities and injured victims for each state as red and green bars that are positioned along a three-dimensional grid. The chart builds its scene using Three.js primitives like `THREE.BoxGeometry` and `THREE.MeshBasicMaterial`, while D3.js handles CSV loading and scaling via `d3.csv`, `d3.scaleBand`, and `d3.scaleLinear`. The scene renders with a perspective camera and an animated `requestAnimationFrame` loop.