We each bring with us the karma of the past, but also our attitudes.
So, yes. Some of us are born evil, and some more than others. But it was a choice made long, long ago.
The amazing and beautiful thing is that we can chose differently. We don't have to persist along our previously chosen path. We can change, but we have to decide to change.
In the Bible it says that God loved Jacob but hated Esau, even before the twins were born! Esau had some debts to pay and he was not grateful for the opportunity. That in itself is evil.
It all comes down to ego -- "selfishness."
Ego was born many thousands of years ago, but long after our original innocence. We chose ego, the source of all evil. And now we can change our minds.