It seems like you don’t know Singapore, or what it’s like for the Indian community in Singapore?
Singapore is less violent only because the minority communities aren’t able to actually fight back, not because they don’t get smacked down. By the police.
Conflict is inevitable when there is both misaligned incentives and either hope of victory, or such a lack of hope that there is nothing left to lose.
Singapore is a good example of having-enough-to-lose-it’s-not-worth-fighting, and no-hope-of-success-in-getting-anything-else. Not an example of no-smackdowns-occurring.
Much of the black/police and black/black violence in the US is caused by many of the communities being in the nothing left to lose state. At least for many of its members. And having enough tools at their disposal to cause violence, with a weak enough set of policing to not actually subjugate the communities entirely.
Singapore is a small island with a quite authoritarian (defacto) dictatorship (I still love you Singapore, despite this! But you know it’s true.) with extremely heavy arms controls. Seriously, if you read the gun laws and saw how heavy enforcement was, you’d understand.
Literally the best ‘bad’ folks can muster, even with concerted effort, is the occasional starter pistol, modified air soft gun, or some knives. The police have machine guns.
Do you really think Singapore doesn’t have systemic prejudices?