The Anti-Defamation League (ADL) has a history and ongoing pattern of attacking social justice movements led by communities of color, queer people, immigrants, Muslims, Arabs, and other marginalized groups, while aligning itself with police, right-wing leaders, and perpetrators of state violence. More disturbing, it has often conducted those attacks under the banner of “civil rights.” This largely unpublicized history has come increasingly to light as activists work to make sense of the ADL’s role in condemning the Movement for Black Lives, Palestinian rights organizing, and Congressional Representative Ilhan Omar, among others. We are deeply concerned that the ADL’s credibility in some social justice movements and communities is precisely what allows it to undermine the rights of marginalized communities, shielding it from criticism and accountability while boosting its legitimacy and resources. Even when it may seem that our work is benefiting from access to some resources or participation from the ADL, given the destructive role that it too often plays in undermining struggles for justice, we believe that we cannot collaborate with the ADL without betraying our movements.