1. Sure you can. If the state had all the rights of the individual, it is termed "anarchy" - i.e., without the state having some sort of HIGHER AUTHORITY, there would be no state. I'm a hardcore libertarian and I know that.
2. I totally agree with you. I mean, if Hitler was caught, there always is that possibility he didn't kill 6 million Jews, Roma, and gypsies and break up millions of families. I mean, just like Charles Whitman might not have been guilty of shooting and killing 14 people, even though he was the single person in the clock tower holding a sniper rifle and left a suicide note taking all blame.
3. Did you ever see A Clockwork Orange? They cured him, alright.
4. Again, I totally agree. I mean, stealing - oops, taxing the people out of their own kroners or whatever it is over there so that some criminal can be in a nice bed in a nice cell with TV and plenty of room is sooooooooooo much cheaper than buying 5 two kroner bullets.