on their time and their prestige to participate in the operation of the machinery of practical politics.
There is a most important reason why the prosecutor should have, as nearly as possible, a detached and impartial view of all groups in his community. Law enforcement is not automatic. It isn't blind. One of the greatest difficulties of the position of prosecutor is that he must pick his cases, because no prosecutor can even investigate all of the cases in which he receives complaints. If the Department of Justice were to make even a pretense of reaching every probable violation of federal law, ten times its present staff would be inadequate. We know that no local police force can strictly enforce the traffic laws, or it would arrest half the driving population on any given morning. What every prosecutor is practically required to do is to select the cases for prosecution and to select those in which the offense is the most flagrant, the public harm the greatest, and the proof the most certain.
If the prosecutor is obliged to choose his cases, it follows that he can choose his defendants. Therein is the most dangerous power of the prosecutor, that he will pick people that he thinks he should get, rather than pick cases that need to be prosecuted. With the law books filled with a great assortment of crimes, a prosecutor stands a fair chance of finding at least a technical violation of some act on the part of almost anyone. In such a case, it is not a question of discovering the commission of a crime and then looking for the man who has committed it, it is a question of picking the man and then searching the law books, or putting investigators to work, to pin some offense on him. It is in this realm—in which the prosecutor picks some person whom he dislikes or desires to embarrass, or selects some group of unpopular persons and then looks for an offense, that the greatest danger of abuse of prosecuting power lies. It is here that law enforcement becomes personal, and the real crime becomes that of being unpopular with the predominant or governing group, being attached to the wrong political views, or being personally obnoxious to or in the way of the prosecutor himself.
In times of fear or hysteria political, racial, religious, social, and economic groups, often from the best of motives, cry for the scalps of individuals or groups because they do not like their views. Particularly do we need to be dispassionate and courageous in those cases which deal with so-called "subversive activities." They are dangerous to civil liberty because the prosecutor has no definite standards to determine what constitutes a "subversive activity," such as we have for murder or larceny. Activities which seem benevolent and helpful to wage earners, persons on relief, or those who are disadvantaged in the struggle for existence may be regarded as "subversive" by those whose property interests might be burdened or affected thereby. Those who are in office are apt to regard as "subversive" the activities of any of those who would bring about a change of administration. Some of our soundest constitutional doctrines were once punished as subversive. We must not forget that it was not so long ago that
