Prosecutors too often abuse unrestrained powers.

Here’s how it’s supposed to work: Upon evidence that a crime has been committed — Professor Plum, found dead in the conservatory with a lead pipe on the floor next to him, say — the police commence an investigation. When they have probable cause to believe that someone is guilty, the case is taken to a prosecutor, who (in the federal system, and many states) puts it before a grand jury. If the grand jury agrees that there’s probable cause, it indicts. The case goes to trial, where a jury of 12 ordinary citizens hears the evidence. If they judge the accused guilty beyond a reasonable doubt, they convict. If they think the accused not guilty — or even simply believe that a conviction would be unjust — they acquit.

Here’s how things all-too-often work today: Law enforcement decides that a person is suspicious (or, possibly, just a political enemy). Upon investigation into every aspect of his/her life, they find possible violations of the law, often involving obscure, technical statutes that no one really knows. They then file a “kitchen-sink” indictment involving dozens, or even hundreds of charges, which the grand jury rubber stamps. The accused then must choose between a plea bargain, or the risk of a trial in which a jury might convict on one or two felony counts simply on a “where there’s smoke there must be fire” theory even if the evidence seems less than compelling.

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http://www.usatoday.com/story/opinion/2014/03/19/law-enforcement-clue-jury-criminal-column/6490641/