I don't think anyone is born evil. I think it's the result of a long process that often begins at an early age.
Just as a side: People constantly refer to hitler as THE evil of WW2. Yeah, he was an evil SOB. But there was a whole train load of others as well, that actually did the deeds, in a very evil fasion. The whole lot of em had no concerns for life.
Psalm 58:3
The wicked are estranged from the womb: they go astray as soon as they be born, speaking lies.