And you've, ahh, actually seen these demons?
One can speak of seeing a wind, but it's not really the moving air we see.
Some folk of much experience in my association have "spiritual eyes" gifted at seeing such. I have rarely "seen" such though faintly at times. Mostly I "sense" them often enough in my body--certainly the typical hair on the back of the neck--but mostly I sense them in my spirit and hear in my heart/mind from Holy Spirit what is going on--what a given demonic force's focus, influence is.
But mostly, I don't get caught up in dialogue with such. I don't like talking with or arguing with forces, entities in league with the Father of Lies. What's the point. Just take the authority Christ has bought for us and send them packing. And teach the individuals involved how to stay free.
I suspect you value freedom. You likely haven't the same appreciation for FREEDOM someone who's been bound to/by demonic forces then delivered--experiences. Such freedom can feel incredibly liberating, freeing. If my observations of working with many bound individuals is any clue--Words are not adequate to well describe the different states of being--the bondage is so dark, narrow, restricting, overpowering. The freedom is such a contrast.
Incidentally, the book BONDAGE BREAKER (I think by Anderson) is great classic on getting and staying free of a variety of spiritual, habitual bondages.
Sounds like terrorists versus those who harbor them.