One of the things about the law that may seem paradoxical is just how stretchy the fabric of justice can be. The language of a given law does not change, but the way it is applied does not stay static. Over time, new challenges may be brought and different courts may come to different interpretations. Until a case makes it to the U.S. Supreme Court and the justices issue a decision, it isn't safe to say what the law of the land is.
As experienced criminal defense attorneys in Chicago know, major felonies get particular attention from prosecuting attorneys. But what constitutes a "major" felony? That's something that's a little harder to answer.
For most people the concept of law is probably quite simple. There are behaviors that are deemed illegal and there are laws on the books that spell out what they are. Violators of the laws get charged with the crime by the government and, if they're found guilty, they are punished. That, however, is a simplistic take on the subject and has a way of leading people to draw dangerous conclusions.
One of the cornerstones of the U.S. law enforcement system is that police are not supposed to be able to place a person in custody without probable cause.