(KUALA LUMPUR, Malaysia) — Embattled Malaysian Prime Minister Najib Razak poured scorn Sunday on a huge two-day rally that brought together tens of thousands of yellow-shirted protesters demanding his resignation over a financial scandal. Large crowd of protesters camped overnight on the streets of Kuala Lumpur wearing yellow shirts of the Bersih movement — a coalition for clean and fair elections — even after authorities blocked the organizer’s website and banned yellow attire and the group’s logo. Former Prime Minister Mahathir Mohamad, who has been spearheading calls for Najib’s resignation, made appeared at the rally with his wife for a second day, telling protesters that people power was needed to remove Najib and return the rule of law. Najib has been fighting for political survival after leaked documents in July showed he received some $700 million in his private accounts from entities linked to indebted state fund 1MDB.