Why do random people stare at me?

ANYWHERE I go there has to be at least someone staring at me and I don't understand why... and when I look at them most people just keep staring and it becomes like a bit of a staring contest until I have to look away. I hate it because it makes me feel awkward and self-concious...
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Thanks for the opinions everyone, I don't know what I've concluded from them but thanks lol.
Why do random people stare at me?
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