Tahrif/Tahreef

Tahrif, or Tahreef, is the Arabic word for "corruption." The term is used to reference a conspiracy theory dating back to the 9th century CE, which claims that Christians and Jews made changes to their religious texts in order to distort the originally revealed revelations of God and allow for the putrification of society.

This database provides an overview of many of the terms and individuals used by or associated with movements and groups that subscribe to and/or promote extremist or hateful ideologies.

Yahya Sinwar

Yahya Sinwar, widely known as the architect of the October 7, 2023, massacre in Israel, was a key Hamas leader who served as the Gaza Political Bureau chief from 2017 until July 2024 and organization-wide Political Bureau... Read more

People Islamist

Hate Group

An organization whose goals and activities are primarily or substantially based on a shared antipathy towards people of one or more other different races, religions, ethnicities/nationalities/national origins, genders, and/or sexual identities. The mere presence of bigoted members... Read more

Key Concepts / Definitions White supremacist

Colleyville Synagogu…

On January 15, 2022, a gunman entered Congregation Beth Israel in Colleyville, Texas, during services, taking three congregants and a rabbi as hostages. The standoff ended more than ten hours later with all hostages released, unharmed, and... Read more

Incidents / Events Islamist

Aafia Siddiqui

Siddiqui is a Pakistani woman who studied neuroscience at Brandeis and MIT in the 1990s and returned to Pakistan in 2003. She allegedly worked as a courier and financier for Al Qaeda. She was taken into custody... Read more