Complex sentence: Stalinism promoted the escalation of class conflict, utilizing state violence to forcibly purge society of claimed supporters of the bourgeoisie, regarding them as threats to the pursuit of the communist revolution that resulted in substantial political violence and persecution of such people.
Split into simpler sentences: Stalinism promoted the escalation of class conflict, utilizing state violence to forcibly purge society of claimed supporters of the bourgeoisie, regarding them as threats to the pursuit of the communist revolution. This policy resulted in substantial political violence and persecution of such people.