Without question, there is no shortage of behaviour that is evil. But no one, not even the most hardened criminal, becomes involved in crime purely out of a desire to engage in evil acts. Every criminal has an internal justification for getting involved in crime. A dispute over money leads someone to engage in murder, for instance. To the perpetrator, it is something for which there is a justification, and which can be restated as an accomplishment of ‘good’. Of course, this is not good in a moral sense, but good in the sense of being ‘of benefit to oneself’.
There is a similar idea about criminals who do not view their evil behaviour and actions as inherently evil.