Figures can be saved as .png files by clicking the three dots to the top right of each chart.
Notes for replication
▼The shapefiles for the Area of Responsibility (AOR) map are from the Deportation Data Project. I used mapshaper to simplify and convert them to TopoJSONs.
Notes for replication
▼Fields on crime are missing from the arrest data, while AOR is absent from the
detention data. I joined these files using shared unique identifiers. I cleaned for
duplicates by removing entries that shared the same unique identifier and date.
I scraped the National Crime Information Center (NCIC) violent crime code manual from here.
Notes
▼A new field, 'Arrest Type,' appeared in the latest data release. Since August 2025, ICE has classified arrests as either 'Targeted' or 'Collateral.' According to this analysis, collateral arrests refer to people encountered incidentally during operations.
About the Data
The ICE arrest and detention data were obtained through
a Freedom of Information Act (FOIA) request by the Deportation Data Project. The data
include administrative arrests from October 2022 through
mid-March 2026. The raw data files are too large to be kept in the GitHub repository, but can
be
downloaded from the website. I cleaned
for duplicates on the 'duplicate_likely' field in the processed data.
I used Python (pandas, numpy, BeautifulSoup) to clean data and Vega-Lite to
create the charts in this project. All my workbooks and .json files can be found in the
repository.