This will give you an idea by providing the context.
These were the main players
1) Progressive Party - supported by english educated, pernakan, the civil service. They moderates and close to the British and respected law and order
2) Democratic Party - sponsored and run by the Singapore Chinese Chamber of Commerce. Supported by Towkays, business people, those in commerce, trade and the various clans. Right and moderate in nature.
3) Labour Front - champion of workers and led by David Marshal who hated those who exploited the common man. This was a prime left party. Marshal however hated the communist to the core. The atrocities they did during the emergency was etched in his mind.
If you look at the three parties, they had virtually covered Singaporeexcept for one group. When the PAP emerged, it needed to build a voter base and went for the Chinese middle schools whose students were young and impressionable. It began stirring the pot relentlessly. From the moment the PAP was formed, they were agitating against the Labour Front and causing endless trouble and riots. All the while PAP CEC and old man said nothing even though the communist did have the majority nor the numbers in PAP.
When old man and his supporters write history and that includes the Toa Payoh brothel, they will write factually about the riots, the union led mayhem etc but forget to add that it was led by the PAP and the old man. For instance, the legal advisor of the Singapore Bus Workers Union was old man at the time of the rioting. His PAP mate, Fong Swee Suan was the head of the union.
Is LKY a left or right wing politician now?