@ErikaSumner I think declaring the enslavement of Africans as a grave crime against humanity, and moving towards amending the consequences it has to this days are very important. But I find it hard to understand the need to rank and compare crimes against humanity and declare one as "the gravest". Both on a theoretical level - every suffering is different, and comparison is impossible; and on a practical level - it may antagonize groups who suffered themselves, instead of creating solidarity.