The Anti-Defamation League (ADL) is a prominent U.S.-based international Jewish non-governmental civil rights and advocacy organization founded in 1913 in response to the lynching of Leo Frank, a Jewish man in Georgia. Initially focused on combating antisemitism and defamation against Jewish people, it has expanded its mission to combat all forms of bigotry, discrimination, and extremism, including Islamophobia, white supremacy, anti-Muslim groups, far-right movements, and other hate groups. The ADL operates through advocacy, education, legal action, monitoring of hate groups, pro-Israel advocacy and defending Israel, often monitoring critics of Israeli policies, hate crime assessment, law enforcement training, and influencing media and policy. It maintains 25 regional offices across the United States, a government relations office in Washington, D.C., an office in Israel, and staff in Europe, reporting on global antisemitism trends and assisting in hate crime prosecutions. Under CEO Jonathan Greenblatt since 2015, the ADL reported $38.3 million in revenue in 2023, primarily from contributions and grants, with $57.9 million in operating expenses. The organization has been influential in shaping public discourse on hate and discrimination, though it has faced criticism for its stances on Israel-Palestine issues, alleged conflation of anti-Zionism with antisemitism, surveillance controversies in the 1980s, and positions on immigration and LGBTQ+ issues. Despite debates, it remains a key player in civil rights advocacy.