What were the causes of the race riots(Jim)

A lot of reasons have been named for causing the riots.For example,the Malaysia deputy Prime Minister blamed Indonesia and Communist provocateurs,while Singapore Prime Minister Lee Kuan Yew attributed the riots as a result of agitation by Syed Jaafar Bin Albar and UMNO as the PAP-UMNO relationship were severely strained after the PAP challenged the UMNO in the March 1964 Malaysia federal election. UMNO high ranking leader Syed Jaafar Bin Albar came to Singapore after the elections to talk to the Malays in Singapore.He wanted to dislike PAP and Lee Kuan Yew.He told them the PAP only supported the Chinese as he wanted them to think that PAP ill-treated the Malays. He also wrote bad things in the Malay newspaper Utusan Melayu about PAP.The Malays not only became very angry with PAP,but also with the Chinese.