Anti-Defamation League | 34,250 followers on LinkedIn. To stop the defamation of the Jewish people, and secure justice and fair treatment to all. | ADL is a leading anti-hate organization that was founded in 1913 in response to an escalating climate of antisemitism and bigotry. Today, ADL is the first call when acts of antisemitism occur and continues to fight all forms of hate. A global leader in exposing extremism, delivering anti-bias education and fighting hate online, ADL’s ultimate goal is a world in which no group or individual suffers from bias, discrimination or hate.