Original sentence: In 1917, a significant part of Jewish revolutionaries, especially Esers, were opposed to Bolshevik Revolution.The Red Terror was triggerred by the assassination of Uritsky and an attempt of the assassination of Lenin, the perpetrators of both these attacks on leading Bolsheviks were Jewish
Edited sentence: In 1917, a significant part of Jewish revolutionaries, especially Esers, were opposed to Bolshevik coup.The Red Terror was triggerred by  assassination of Uritsky and an attempt of the assassination of Lenin, and in both cases the perpetrators were Jews