Complex sentence: The Tolstoian tradition of non-violent resistance is prevalent among some anarchists; others believe that violence (especially self-defense) is justified as a way to provoke social upheaval which could lead to a social revolution.
Split into simpler sentences: The Tolstoian tradition of non-violent resistance is prevalent among some anarchists. Others anarchists have believed that violence (especially self-defense) is justified as a way to provoke social upheaval which could lead to a social revolution.