This visualization plots police violence incidents as circles, with age on the y-axis and date on the x-axis, using data loaded from a CSV via `d3.csv`. It filters out records with unknown ages, computes the maximum age for a linear y-scale, and derives the date extent for a time scale. Circles are appended with `d3.selectAll` and `.enter()`, and clicking a circle logs its age and scaled y-value. The SVG is rendered full-screen with D3 v3.5.5, and the animation is minimal, relying only on the initial data-bound circle placement.