http://www.edelsonlaw.ca/news/show/46/8/0000/0
Our Courts have repeatedly said that the ideal prosecutor is a “minister of justice” who discharges his or her duty to the court in a fair and objective manner.
It is the Crown’s duty, therefore, not to secure a conviction at all costs, but to ensure that the evidence supporting the prosecution is put fairly before the court. For this reason, it is often said that the Crown never wins or loses.
Moreover, prosecutors are not permitted to express their personal opinions about the guilt or innocence of the accused or to engage in inflammatory rhetoric in the court proceedings. They must carry out their role with solemnity, dignity and professionalism.
Similarly, the Crown ought not to act as an advocate for the victim or the victim’s family. The criminal justice system is not a three-party proceeding and, in general, complainants or their relations have no standing in the criminal process.