We are not just talking about the physics of light and darkness. We are talking about good and evil. A criminal does not want the criminal deeds exposed not just because the criminal does not want to get caught, but also because the criminal does not want the weight of carrying the guilt. Whenever evil does a deed in darkness and the deed stays in darkness then the evil is permitted to keep on doing evil things because no one knows about the deed. This is simple logic but logic is not a friend of the darkness.
Darkness despises logic.
If you have been required by any life circumstance to keep quiet about any kind of persecution, attack, or victimization from any source you must speak out to someone about this event. The trials of Jesus' life should be a lesson for all of us. Jesus' trials could have been made known only to God, but the darkness and evil that perpetrated these trials upon Jesus would have won a huge victory if no one had ever known what the evil did to our beloved Savior. Even if we have been the victim of an attack, or we have been persecuted, or we have been victimized, we must still realize a part of us put Jesus on the Cross. To speak out about the evil done to us, to speak out about the evil done to others, or speak out about what we might have done, is mandatory for our civilization to continue to exist and our personal lives to remain intact.