Even more than earlier Moscow show trials, Bukharin's trial horrified many previously sympathetic observers as they watched allegations become more absurd than ever and the purge expand to include almost every living Old Bolshevik leader except Stalin.
Bukharin's confession and his motivation became subject of much debate among Western observers, inspiring Koestler's acclaimed novel Darkness at Noon and a philosophical essay by Maurice Merleau-Ponty in Humanism and Terror.