From my point of view, people that are born with evil streak are vanishingly rare, as much as being born with two heads. What happens later is simply a product of nurture, upbringing, context, and chemical imbalances. Pure black and pure white do not exist in nature.
The suspect was spotted in the Bedford Park station in the Bronx at 7:20 a.m. Thursday, and after a brief chase, was taken into custody. He was in possession of two knives at the time of the arrest.
He has multiple prior arrests, including five in the last 12 months for charges ranging from assault to sex crimes.
Not evil ?
A few incidents (or even many incidents) can paint a bleak picture, but they can’t really prove an absolute.