I believe it can happen either way.
Both. + It all depends who they hang around with.
The way they're raised. We're all born innocent with only our parents or guardians to set examples.
raised wich makes them bad
I believe that some are born bad and some are raised in a manner that makes them turn out bad. I think my father had some of both.
i believe the majority of bad people become that way due to environment. probably about 5% of them are just bad seeds.
Both, depends on the person
Mostly the latter.
Both...I don't think one can make a sweeping generalization about human behavior.
A little of both
Raised, look at Jeffrey Dahmer. His dad got him into bones, bones got him to roadkill, roadkill got him to humans and then it goes on.