The Supernatural

Supernatural powers are rare, with only around 1/1000 people having any ability, and only about 1/10 of those people have even the potential to have powers that are strong to be useful. If you want to do the math, that's about 500 people in the entire country. Of those 500, even fewer have any sort practical application for their powers, since they live in a peaceful country with a low crime rate. Reaching your potential requires practice, so without any reason to use their abilities, many of them remain weak.

Supernatural powers run in families, but are based on several different traits, some of which are recessive. They aren't evenly distributed either, with most people with ability living in the cities. This is due to some nasty history where people with supernatural abilities were systematically hunted down and killed around 200 years ago. It was easier to blend in with the crowd in larger cities and rural areas tended to hold onto the prejudice longer.

All this means that everyone knows there are people with supernatural abilities around, but it's surprising to run into them, and even more surprising to run into one who actually puts their powers to use. Most people are okay with people with supernatural abilities these days (though some types of abilities are considered creepy). Some supernaturals have even made careers of having powers (entertainers, plenty of soldiers, give me more ideas I've run out). However, using your powers on someone's mind, person, or property without their consent is considered to be morally questionable.