It's not a good thing to not want rapists, thieves and terrorists entering your country? Pretty much every country has immigration restrictions that aim to stop

It's not a good thing to not want rapists, thieves and terrorists entering your country? Pretty much every country has immigration restrictions that aim to stop those kinds of people and catch a lot of innocents with their broad classifications. The US has a visa-waiver program to enable easy access to people from western or developed countries. No doubt it's because those people are lower risk. It's not hate to trust Singaporeans more than Russians.