Prosecution refers to the government's role in the criminal justice system. When criminal activity is suspected, it is often up to the government to investigate, arrest, charge, and bring the alleged offender to trial. Prosecutors are the lawyers who work for the government and who are responsible for putting on the government's case against a defendant. Prosecutors may be called county attorneys, city attorneys, or district attorneys. The prosecutor is the opponent or "adversary" of the criminal defendant and his or her attorney.  The prosecutor and the defense attorney are on opposite sides--the two sides go head-to-head against each other in court. Because these public attorneys focus their energies on prosecuting criminal cases, they are generally very experienced in criminal law, and it is therefore essential that the defendant's attorney have the same advantage. Thus, in order to best preserve a criminal defendant's rights and strike a fair balance in court, representation by an experienced criminal defense attorney, particularly one knowledgeable in DUI and drunk driving law, is a must to get the best possible outcome in your case.