I suspect the natural fear of the dark is because our most dominant sense - sight is largely useless, forcing us to rely on senses we might in our day to day life consider secondary, when in reality, they're just as useful in the right contexts. In addition I further suspect another fear of the dark is the result of conditioning that has taught us anything dark and yes this does have some bearing on the BLM issue is something to be avoided or feared.
But how to counter the fear of the dark, do so by way of practice ; take to going out at night where there is no artificial light, to perhaps sit and let your senses explore where I got over my fear of the dark by playing a game, a game of which I in my mind tried to identify what my senses picked up; ah an owl, barn owl I think and something creeping around in the bush, not human, it's too careful where if one was to focus on something in the bush, focus your hearing on that one things and in your mind's eye picture what it's up to create story. But if you go where artificial light isn't and you don't wreck your night vision with artificial light of your own, where it can take up to twenty minutes for that night vision to fully return, you will soon discover how much light there actually is in the dark, to perhaps go out hiking in it or at least walking
Work to recognise and undo the conditioning and you may soon find the dark is in fact a welcoming place.