The Left-Hand Path was not called evil because it hurt people. It was called evil because it made people independent. Every system of control, religious, political, or economic, runs on one thing: your belief that you need the system to survive, to be saved, or to be whole. The moment you truly realize you do not need it, that you can reach the divine without a priest, build a life without an employer's blessing, know the truth without an institution's stamp of approval, the system loses its grip on you. The dark traditions were crushed because they reliably produced that realization. They taught self-deification, not in the narcissistic sense of thinking you are better than others, but in a precise sense: the divine is not above you demanding your submission. It is inside you, waiting for you to develop it.
The Gnostic traditions were among the first that early Christian authorities set out to wipe out, precisely because they taught gnosis: direct knowledge, personal revelation, reaching the divine without a middleman. The Cathars of 12th-century France were massacred in the Albigensian Crusade, not because they were immoral, but because they believed the material world was made by a lesser god and that the soul carried a divine spark that needed no church to find its way home. The witch trials of the 1400s through 1600s mostly targeted women who practiced healing, midwifery, and the old earth-based ways, skills that gave people power over their own bodies and their immediate world without needing any official authority. The pattern holds across five thousand years: what got called 'evil' was whatever gave the individual power against the institution.
The terms Left-Hand Path (Vama Marga in Sanskrit) and Right-Hand Path (Dakshina Marga) come from Hindu Tantra. The Right-Hand Path stays inside normal social rules. It uses practices the mainstream accepts and moves toward union with the divine through obedience, devotion, and cleaning up the ordinary self. The Left-Hand Path uses transgression, deliberately breaking social and mental taboos, as a tool for waking up. It breaks your conditioning on purpose to free your mind from it. The Right-Hand Path says: purify yourself to earn union with the divine. The Left-Hand Path says: you are already divine, and the conditioning that blocks you from knowing it has to be broken, including the ordinary social rules that are part of that conditioning. Neither path is evil by nature. They are two different tools for the same freedom. The Right-Hand Path is safer and slower. The Left-Hand Path is faster and more dangerous, not because its goal is harmful, but because if you are not stable enough inside, breaking your conditioning can wreck you instead of freeing you.