The situation is never linear. If UMNO overplay its hands, and a racial riot erupts, it may actually be net detrimental to Malays as the Chinese will accelerate their exodus and the world will shun Malaysia for their racial violence. We shall see how many Malays are content with simple lifestyles.God forbid. A racial riot in Malaysia will be as dark as hell. The chinese with a reduced numbers would not stand a chance when the Malay runs amok. Everyone including BN or DAP and the chinese themselves should do all they can to prevent an explosive racially-induced riots from happening. China, with its excellent relations with malaysia may just give a token comment. The US are not interested and tiny Spore cannot do anything.
Look at the May13th riots, the chinese resisted ( with Indians help) initially but the ferocity of the Malays rampaging across KL were too much for the chinese who were not accustomed with the fighting nature of the Malays who keep coming. In a majority chinese Spore, the 1964 racial riots also see many chinese casualties. My uncle still recalled with fearful eyes. Hundreds of chinese were killed in the KL riots but analysts suggests the official numbers as 2-3 times more, mainly chinese casualties.
In fact the 60s was not the first time the country faced riots. There were widespread anti-chinese riots immediately after the defeated Japanese army left Malaya during WW2. The Malayan Communist Party guerillas came down from the jungle and slaughtered alleged traitors, both malays and chinese. The Malays fought back violently against the guerillas and anti-chinese riots occurred. Matters settled after the British arrived but the Sino-Malay relations were very strained.
However, Malaysian chinese enjoyed relative peace after the May 13th riots until today while Indonesian chinese faced riots every now and then.Hopefully things will settled after all these protests and the chinese will continue to live peacefully in Msia.