Well, there are plenty of things that you could select that would satisfy the criteria you have given. Overall, though, it is the high level of control in every aspect of the citizens' lives that is most disturbing from my perspective. There does not appear to be any part of your life that can be kept secret and does not need to be moderated. A great example of this is the way that Jonas has to start taking medication to control his sexual drive, or his "Stirrings" as they are called. Even though this is a natural part of growing up, it is clear that the society of which Jonas is a part regards this as an area that needs controlling and suppressing. Note what Jonas feels as he leaves after taking his first tablet:
For a moment, though, he remembered the dream again. The dream had felt pleasurable. Though the feelings were confused, he thought that he had liked the feelings that his mother had called Stirrings. He remembered that upon waking, he had wanted to feel the Stirrings again.
The intrustive nature of this society and the way that it feels the need to control even the most natural of human feelings to deaden human emotions, which are deemed to be too "chaotic" and unstable, is certainly a very sinister aspect of this society. Jonas feels that natural goodness of his "Stirrings," and this adds to his confusion about his society.