Incident overview

The database draws on the Czech DOVA database (Tomas Bata University in Zlín) and on other open sources (including GTD, ACLED, Europol TE-SAT, CST, SPCJ, the Federation of Jewish Communities and media reporting). The records have been edited, supplemented and harmonized according to our own data discipline.

The unit of record is a single incident in a public place since 2014. We include serious violent attacks — and credible threats or foiled preparations of such attacks — in which the victim is interchangeable, that is, affected because they happened to be present or because they belong to a particular group. We exclude targeted personal violence (the murder of a specific individual, robbery, domestic violence), attacks on police and security forces, attacks on property and infrastructure, and mutual (e.g. hooligan) violence. An incident is dated to the day of the act and the perpetrator is not counted among the victims.

Motivation. Ideological attacks stem from an ideology, faith or politics (terrorism and extremism). Non-ideological acts are those of an individual driven by personal hatred, trauma, mental illness or a dispute. Hybrid means sabotage or violence directed by a state. Undetermined means the motive has not been disclosed or cannot be reliably established. The classification is an expert estimate based on open sources, not a legal qualification, and may change for recent cases.

This is a working compilation from open sources, not a complete or representative list. Some categories and countries are over-represented (antisemitic incidents thanks to community monitoring, the Czech Republic thanks to the Czech database), and a rise in the number of records more often reflects better reporting than a real increase in the threat. The figures are therefore not suitable for comparing countries or categories, nor for deriving trends. Data as of 18 September 2026.