Malaysia nobody mention the ethnic tension between the Malays and Chinese and maybe that's why plane went missing.

Malaysia nobody has mention the ethnic tension between the Malays(who about 50% of population in Malaysia) and Chinese(who about 24% of the population)indeed,the country or city-state Singapore was born of this tension for Singapore is mostly Chinese.Now missing fight was headed for China from Malaysia.Now think the history of ethnic tension would mention and in past there has been much violence with two group but not peep from anybody about this. Why?