Understanding hostility.
An evidence-first atlas exploring where inter-group bias comes from, how it shows up in laws, language, attitudes, and violence, and what has helped reduce it.
142
Countries
847K
Incidents
318
Groups
12
Source Families
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Choose a path into the data. Every page reveals sources, confidence levels, and what has helped.
Featured case studies
In-depth explorations of inter-group dynamics -each backed by multiple source families with full methodology.
Transparent methodology
Every summary on this site can be drilled into: how many sources back it, what their coverage gaps are, when they were last updated, and where official data and lived experience diverge. We preserve contradictions rather than flattening them.
What changed recently
FBI UCR 2025 hate crime statistics added -12,847 incidents across 16 bias categories.
New case study: Anti-migrant rhetoric in UK and France, 2020-2025.
Bridge story added: Interfaith peace coalition in Northern Ireland, 2024 progress report.
Pew Global Attitudes 2025 wave integrated -42 countries, 58,000 respondents.