alt Hacker Newsthat sounds good in theory, but in practice almost every country in europe has already fully bought into Palantir tech so you are a bit late with that. Europol has used "Palantir Gotham" for a decade at this point. The idea of western nations national sovereignty is an illusion. Most european journalists wouldn't need to be told not to report badly about Palantir, that's the only thing that makes this story an outlier.
What you say can be true while what I say is valid in the same time. US gov is currently very hostile to whole Europe, way more than say to China and I don't see any option for a change in this in future. This is the approach US population prefers.
If we here use such tech, maybe we need to come up with our own (just FFS don't buy israeli stuff if we want to have any higher moral ground), its not magic just data analytics. And to be frank, I am more than happy if we don't have such capabilities, we have much more serious topics to focus on like russia probably starting another war in Baltics in few years - thats a real mortal enemy, not some left wing dissidents (unless heavily manipulated by russians but then you don't need palantir's solutions).