This scatterplot shows the relationship between perpetrator groups, target types, and the number of injured people in U.S. terrorism incidents. The visualization uses a circle mark with fixed size and semi-transparency to reveal overlapping points. It encodes the categorical fields PERPETRATOR 1 and TARGET TYPE 1 on the x- and y-axes, and the quantitative INJURED field on size. Built with the Vega-Lite API, the chart reads data from a CSV file via d3.csv and renders through the Vega and Vega-Lite renderers.