Tens of thousands of Malaysians assembled near Kuala Lumpur’s Merdeka Square on Saturday to demand that Prime Minister Najib Razak step down from office. The rally, one of the largest demonstrations against Malaysia’s government in recent memory, was the culmination of escalating public hostility toward Najib, especially after The Wall Street Journal reported that his private bank accounts held over $700 million in funds purportedly siphoned off a struggling state investment fund called 1Malaysia Development Berhad.