That's not actually true, though. In some sense all governments are posessed of "weapons" like this, the cost of use being only the violation of some norm. Or even law. The "rule of law" is a gentelemen's agreement at its core. Yet the world is filled with basically good governments who broadly follow that code!

So the way you treat that is by calling out and resisting the attempts to weaponize the government in new ways, not just throwing up your hands because it was "eventually" going to be used anyway. No, it's bad. You should say that it's bad and take action to oppose it.

If you're not American, then you should consider before commenting that you may be missing important context. The allegiance of US federal law enforcement agencies does not switch on a moment's notice or even follow electoral control of the government; one example of this you can easily verify is that the director of the FBI is always a Republican.