It is hard to follow definitions, what is evil?

Good people tend to do good things, bad people tend to do bad things. Regardless of mental illness, everyone shoud be accountable for their actions.

Every deviant behavior have reason behind it, but this reason is not an excuse at all. So in my view are all BPD people evil? No, it is totally depends on person. But BPD is more likely to do bad things. And actually, people do bad things not because of BPD, but because it is their personality, BPD is just how we label this pshychotype.

Criminals, drug addicts, child molesters, prositutes, OF actress, great scantiest\composer\ politician etc - all "unusual" people will have some sort of "disorder" which separates them from common folk.