The Malaysian democracy movement, Bersih, has called its fourth major mobilisation — named Bersih 4.0 — for August 29-30 amid increasingly desperate and repressive attempts by the Barisan Nasional (BN) government of Prime Minister Najib Razak to suppress investigations of his alleged involvement in a multi-billion dollar corruption scandal involving the debt-ridden state investment fund 1Malaysia Development Bhd (1MDB).