This visualization filters city labels by population and proximity on a Mercator projection. Gray dots represent all cities from an OpenStreetMap dataset (tagged `place=city`), while highlighted dots show larger cities with smaller neighbors filtered out within a variable buffer radius. The example uses `d3.geoMercator` and `d3.geoPath` for mapping, `d3.scaleSqrt` for circle sizing, and `d3.scaleLinear` for buffer scaling. Country boundaries come from World Atlas TopoJSON, processed with the TopoJSON library. The algorithm applies a proximity-based filtering approach with variable buffer distances, demonstrating a method for decluttering dense point data.