The Anti-Defamation League has surveilled leftwing activists and “regularly tracks, profiles and sends threat assessments of individuals” it perceives as a problem, according to an internal email obtained by the Guardian.

The May 2020 email was sent from ADL’s head of security to chief executive Jonathan Greenblatt and unspecified employees of the Jewish group, which labels itself the “leading anti-hate organization in the world”. A self-styled civil rights organization, it plays an outsize role in shaping public sentiment and national policy around antisemitism, but it has been plagued by controversy in recent years over its attacks on Israel critics and social justice groups.

The memo shows the ADL collected information on a Black Indianapolis activist, Tatjana Rebelle, who worked on Deadly Exchange, a national campaign against an ADL-backed program to send US police officials for training with the Israeli military.