From first-person accounts of the Armenian and Yazidi genocides, to Anne Frank's diary and the Nuremberg prosecutor who 'peered into hell', we need to listen to those who experienced genocide, to seek accountability – and take heed of the early warning signs. The unmediated first-person voice individualizes the unfathomable numbers of those targeted by genocide: 'Anne Frank The Exhibition' at the Center for Jewish History, New YorkCredit: Eduardo Munoz/REUTERS Before October