Did you mean to say that "men as a group are perceived as a threat by women"? As the comments here have gone over, someone having fear does not imply a threat exists. In other words, "that sounds like a you problem."

If you're at night alone and there's a woman there, she's going to be afraid of you, even if you're a good guy.

This is complete subjective, women will inherently cling to the largest, safest person as their defense mechanism. The amount of times I’ve had a random woman I’ve never met cling to me like a drunk child after the bars close until they get a ride or find their friends is basically everytime I go out.