They should not be treated like common thieves.
I did not know common thieves get hit with a shitload of attempted murder charges, conspiracy in aid of international terrorism charges, continuing criminal enterprise across border charges, etc and then get carted off to the supermax prison in Colorado to cool off until they die.
Usually the common thief gets some probation, and a few days in jail in exchange for promising to keep his nose clean going forward.
The Miranda warnings and other procedural/administrative issues have no bearing on how severely someone is punished.
If anyone wants to find out how much of a reward it is to get Mirandized, try the following experiment next time you are bored: "X" out of the U2 bootleg(I sure as hell won't get that far!), go out and run stop signs, red lights and speed until a cop blue lights you. Then run from the cop- lead them on a big chase, then in a dark area near some woods, bail out of the car and run on foot. When the cops take you down into the thorny bushes and drive their knees into your neck, cuff you and stuff you into the squad car, they will read you your rights as you are still trying to catch your breath from running. Then you will go to the police station, get fingerprinted, etc, and the first call will be to your boss telling him you are in some deep legal shit and wont be in to work tomorrow. Or the next day, or the next day! YOU'RE FIRED, YOU CAN'T MAKE YOUR OBLIGATIONS, AND THEY DON'T WANT AN ASSHOLE CRIMINAL WORKING FOR THEM. Now on to a shitload of money from a friend or relative if you are lucky enough to get bailed out, then a bunch more money on an attorney and court costs, then a few months in county and a nice record that every cop who ever pulls you over again, not to mention every potential future employer can see. Sound like fun to anyone?
The Miranda is the formal beginning of the entire nightmare I just described. It is the police telling you that, in case you didn't notice the blue lights or feel Sgt.Warren take you down and put his knee in you, or feel the handcuffs being applied, YOU HAVE NOW OFFICIALLY ENTERED AN ADVERSERIAL RELATIONSHIP WITH THE JUSTICE DEPARTMENT. We will now use anything and everything(money, resources, our word) to build a case against you, so at this point, SHUTTING UP may be advisable. Criminals, not known for being too bright, often do not shut up. They will keep talking and keep digging their hole after they have been mirandized. Such was the case with the underwear bomber.
Most of the time it does not even matter if they do not talk, as the actions of the defendant clearly observable by witnesses, police, etc are enough to make the case against them quite well. People do not convict themselves too often, and when interrogations yield valuable information, they are usually done well after an arrest once a rapport has been built. Basic criminal justice/investigative policy right there, you do not even have to be an expert.
There is a very small group of Cheney/Gingrich types, who have already been proven to be frauds in many different ways, who have started this anti Miranda tirade and spread it to the loyal foot soldiers. They have been uniformly denounced by professionals who know what they are talking about(former justice department officials, Colin Powell, Robert Mueller, Robert Gates, Leon Panetta, the list goes on).
If anyone on here wants to believe Cheney who had his chief of staff indicted for a major crime and lied for 8 years, or Gingrich, who divorced his wife on her death bed, put his family on welfare and called up hookers from his congressional office phone over professionals who have dealt with terrorism their entire careers, it says a hell of a lot about how far they will go to toe the right wing line.