The use of the word ‘apartheid’ in its legal meaning can sometimes, but not always, generate considerable power and attention. The related crime against humanity of persecution never seems to attract the same interest. Our finding in 2020 that the Myanmar authorities were committing the crime against humanity of apartheid against ethnic Rohingya received considerable coverage of the facts of their mistreatment, though less about the crime itself. Our new findings that Israeli authorities were committing the crime against humanity of persecution against Palestinians received limited attention. But our finding that they were also committing the crime of apartheid has received an extraordinary amount of attention — both support and criticism. But in researching the law for both crimes, it has become clear that in terms of justice, they are ‘forgotten’ crimes against humanity, and are rarely prosecuted.