No they are not its how and where the grew up, Along with who raised them to become who they are things the influence them to make the decisions in life they do. I don't be leave anyone is truly evil just see the world differently and make wrong choices.
Apparently nobody here has taken even a basic psychology class. It comes down to Nature vs. Nurture. The genetic inheritance combined with the upbringing of a child will dictate their behavior.
Obviously children can be born with psychological disorders that make them "evil", however whether a healthy, "normal" child is evil or not depends on how the child was raised.