While there is a bit of that, the vast majority of Get Out does not find its terror in violence, it comes entirely from the unease that our hero has to deal with throughout the entire film.
Technically, Get Out will be classified as a horror movie.
Instead, it does the job on an emotional level, by causing you to feel that something is wrong, while showing you very little.
It doesn’t have to make you jump in order to scare you.