To support an organization or movement that promotes antisemitism because it also supports good causes is the beginning of the road to accepting racism. Many racist groups have also promoted causes that deserve support. The Black Panthers had breakfast programs for inner-city children, while advocating violence against whites. And the Ku Klux Klan organized summer camps for working-class families, while advocating violence against blacks.
There must be zero tolerance for antisemitism, regardless of the race, religion, gender or sexual orientation of the bigots who promote, practice or are complicit with it. Being on the right side of one racial issue does not give one a license to be on the wrong side of the oldest bigotry.
To give Black Lives Matter a pass on its anti-Jewish bigotry would be to engage in racism. Black antisemitism is as inexcusable as white antisemitism or white racism. There can be no double standard when it comes to bigotry."