It's really easy for even the most burly and masculine male to pass himself off as female. The arms race in the future will escalate with progressively larger robots. Your weapon, on average, should be at least half again your size. Everyone in the past, the present, the future, other dimensions, and far-off planets speaks Japanese. Being a martial arts master enables you to detonate cities at a distance with a snap of the fingers.
Police forces are largely ineffective.
Instead, we should rely on small teams of vigilante superheroines. If you know martial arts, you must call out your special moves' names before you can use them.