Most of those countries have very homogenous populations. You also don’t hear about the bad stuff because unliked the United States they don’t have their dirty laundry being broadcast across every available medium 24/7/365.
[1] https://en.wikipedia.org/wiki/Demographics_of_Singapore
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You can also be multi-cultural in the "look at my skin color sense" but not multi-cultural in your beliefs. And of course for the purposes of this discussion it's a matter of degrees. Locally there may be extremes, but when you compare different geographies that might highlight actual extremes. I'm willing to bet, for example, that the United States is far more diverse both in opinion and nationality than Singapore. Iceland? Less so.
Other countries do have 24/7 TV channels and other media.
Yea and they spend most of that time complaining about Trump. And if they aren't, then people will go to Reddit, or some social media site to do it.
> What are you getting at?
Countries with small, homogeneous populations are going to tend to be less corrupt and better governed. It's more difficult to be a jackass in Iceland than it is in Brasil.