Sarge,
If you try to take on too much, you'll get scared and back out. These are social fears brother.
The lady down the street might give you a dark look if you start getting into this stuff like that.
Do like I do, if you really feel like supporting and defending the Consitution. Do your dammdest to see that every law behind Consitutional due process is observed. NO ONE gets off with less. Make huge noise at the slightest violation of law by ANY governmental agency. That IS the check and balance. Don't worry about the big impossible stuff, one small useful step at a time.
I've said this before. Our government is an ideal called the Constitution. We will probably never get it right. If those acting from governmental postions did something, as soon as they did they were not government anymore. If a group suddenly started doing things like that. They were infiltrating and acting from within as traitors.
It's a matter of being capable of detecting ond removing infiltration.