The nightmare experienced by the little 'un with the birthmark in "Lord of the Flies" symbolizes the innate fears and moral dilemmas that arise in the absence of societal structure. The birthmark itself represents the imperfections and vulnerabilities of human nature, highlighting the fragility of innocence. This nightmare foreshadows the boys' descent into savagery and the loss of their civilized identities, reflecting the overarching theme of the darkness within humanity.
a birthmark maybe....
It could symbolize good and evil
it could symbolize suicide......
Well, she doesn't really have a birthmark, but i guess you could call this a birthmark. So, from that very second Raven was born she knew that she was supposed to do a very evil thing. I don't want to spoil it so I'm not telling you what that evil thing is.
It could symbolize that, but it could also symbolize other things.
Evidence? Not really. If you believe in reincarnation then the birthmark may make a closer connection to your past self seem very real. If you don't believe then a birthmark is not going to be considered anything but what it is by today's standard, an area of dark pigment.
There are a number of things a sea horse could symbolize. A sea horse could symbolize peace or fragility for example.
There are an unlimited number of things that a butterfly tattoo on the left shoulder could symbolize. It could symbolize peace for example.
You could say, "There are many ways to symbolize evil."
Many people could survive a nightmare because "nightmare" means bad dreams and they aren't reality.
A Scales tattoo could symbolize justice, or the person with the ink could believe in astrology and be a Libra.
Short of cosmetic surgery, your best bet is to cover it with make-up. You could also put sun screen on just the birthmark and go tanning to bring the rest of your skin tone up to match the birthmark. You of course can't cover the birthmark perfectly, but just getting the sunscreen on the general area will help.