Antisemitism has a long history in Europe and the US, from medieval blood libel to conspiracy theories that Jews secretly control banks, media or governments. In the US, it shaped the quota system that limited Jewish admissions to elite universities in the early 20th century and the 1924 immigration law. In 1915, a Georgia mob lynched Leo Frank, a Jewish factory manager.
Antisemitism is closely tied to white supremacy. Marchers in Charlottesville in 2017 chanted "Jews will not replace us," echoing the conspiracy theory that Jews engineer immigration to replace white people. In 2018, a gunman killed 11 worshipers at the Tree of Life synagogue in Pittsburgh, the deadliest antisemitic attack in US history.
The Anti-Defamation League counted 6,274 antisemitic incidents in 2025, down from 2024 but the third-highest total since it began tracking in 1979. How to define antisemitism, especially its relationship to criticism of Israel, is debated. ARD treats antisemitism as a form of bigotry that anti-racist work must confront.