The Bible has told us that we have an enemy and the forces of that enemy are not human (Ephesians 6:12). It is possible that what is emerging in our reality is just that.
You don't negotiate with or communicate with those beings, but you had better develop an understanding of them.
All that said, it is also possible that these beings are not demons and that those who speak of them in those terms have misunderstood what we are dealing with.
Some people have said that they have encountered beings that are not at all evil. Ergo, it is quite possible that there are several "races" of beings here now, some of which might be considered "good."
There is a vast amount of anecdotal and sensor evidence re: this matter. Anyone who speaks of it as "space aliens" hasn't been staying abreast of the subject.
And that kind of thinking my friend is how we end up being deceived. Satan throws in what we want to hear. There are two classes of created being (really one class)...angels and fallen angels or demons.
And no wonder, for Satan himself masquerades as an angel of light.
I'm not going to start messing with the spirit world or believing anything like this malarkey. Don't mess with these beings.