You have to thank Hollywood for that mindset
They portrayed their own police force like the show "CSI" standard.
Using advance techniques, super computer and high tech gears for investigation.
Other police forces seem like decade away from this standard.
A friend of mine said that once she saw an Ang Mo tried to offer SG custom officer $50 because when this Ang Mo was at the Malaysian side of the casue way. The custom officer over that side want some "coffee" money to speed up the "processing".
Anyway, their impression of Asia police force as a whole is corrupted and incompetent.
A few years ago, when I attended a course conducted by AngMo teacher, who live in SG, her impression of "crime watch" is a just a local TV show to boost local police ego.
Crime watch only show their success stories but fail to show many crimes that have not been solved.