Complex sentence: A riot ensued--at that stage considered the worst that Jakarta had seen during the "New Order" years--which was followed by a Government crackdown, which later blamed the riots on the People's Democracy Party (PRD).
Split into simpler sentences: A riot ensued--at that stage considered the worst that Jakarta had seen during the "New Order" years--which was followed by a government crackdown. The government later blamed the riots on the People's Democracy Party (PRD).