 When Tun Abdul Razak Hussein succeeded Tunku Abdul Rahman as Malaysia's prime minister, the MIC was forced to become much more responsive to the dictates of UMNO.This was following the May 13 Incident and Razak was more assertive than the Tunku to demonstrate "Malay Supremacy" or "Ketuanan Melayu".Sambanthan, by now bearing the title "Tun", was forced to retire in favour of V. Manickavasagam in 1973.