Those are auxiliary polices, handled by private hires. The Singapore police force is reserved for Singaporeans only, even PR are ineligible for it.
Singapore is a country that depends mostly on talents to build the country, and 3D jobs that are handled by low skilled workers.
At the same time they gave too many PR back in the days, hence they are more reserved nowadays, even to the point of not renewing your PR if you're not staying in Singapore. Perhaps the main factor stemming from the younger generation complaining that the government is taking too many foreign talents that kinna steal their job.
Back in the days, getting an EP was rather a simple process, all you need is to check the salary criteria. EP has no quota, hence the abuse. Now, it's a different story, salary is just a part of it, there are several criteria that may overshadow salary for eligibility. S-pass, on the other hand, has a quota, many are afraid that they may not be able to renew their pass and are forced to leave the job. So, getting a PR is the most secure route for most. At the same time, it is the hardest to get now. S-pass enables you to apply for PR but usually placed under the lowest priority. The good news is, Malaysians are usually at the front of the list, likely due to culture and when we leave, we can't withdraw our CPF, unless you have reached your retiring age.
Yes. That's the sentiment I've been getting as well. Hence my comments in a different thread about the decision that I'm debating, whether to lock in my Singapore status by taking up their long standing offer of citizenship, before I retire to Australia next year (for fear of not getting my re-entry permit renewed).