This visualization shows missing migrant incidents worldwide, with each death or disappearance represented as a bubble on a world map whose size reflects the reported death toll. Users can brush over a time-series below the map to filter incidents by date, revealing temporal patterns in migration routes. The example uses D3 v7’s `geoNaturalEarth1` projection, `geoPath`, and `geoGraticule` for map rendering, while React manages state and updates. Data comes from the Missing Migrants Project CSV, and the implementation demonstrates performance optimizations for rendering large numbers of points as SVG circles.