The various industrial classes show a different ratio of criminality. In general among industrial classes the least crime is committed by the agricultural classes, while the most crime is committed by the unemployed or those with no occupation. The census of 1904 showed that 50 per cent of all prisoners that year were non-agricultural laborers or servants.
(3) The demographical conditions, conditions concerning the distribution and density of the population, have an influence upon crime. In general there is more crime in the cities than in the country districts. The statistics of all civilized countries seem to show about twice as great a percentage of crime in their large cities as in the rural districts.
(4) The influence of race and nationality seems to be marked in criminal statistics. We have already noted that the ratio of criminality among the negroes in the United States is from four to five times higher than among the whites. We have also seen that among our recent immigrants the Southern Italians have a pronounced tendency to crime, especially serious crime. Among our older immigrants the Irish on the other hand, owing largely to their love of liquor, have a pronounced tendency toward minor offenses. Even in 1904, 36.2 per cent of the foreign-born prisoners were Irish, while the Irish constituted but 15.6 per cent of the total foreign-born population.
(5) Defects in government and law are among the most potent causes of crime. These are so numerous that we cannot attempt even to mention all. It is obvious that such things as too great leniency on the part of our judges and shortness of sentence if convicted; difficulty or uncertainty in securing justice in criminal courts; costliness of obtaining justice in our civil courts; bad prison systems in which first offenders and hardened criminals mingle; lack of police surveillance of habitual criminals; corrupt methods of appointing the police; partisanship in the administration of government, and the like, all conduce to crime. And many of these things, we may add, have been especially in evidence in America.
(6) Educational conditions have undoubtedly a great influence upon crime. While education in the sense of school education could never in itself stamp out crime, still defective educational conditions greatly increase crime. This is shown sufficiently by the fact that illiterates are much more liable to commit crime than those who have a fair education. The prison census of 1904 showed that 12.6 per cent of the prisoners were illiterate, while only 10.7 per cent of the general population were illiterate; and of the major offenders not less than 20 per cent were illiterate.
The defects in our educational conditions which especially favor the development of crime in certain classes are chiefly: lack of facilities for industrial education, lack of physical education, and lack of specific moral instruction. The need of these three things in a socialized school system need not here be more than emphasized.
The influence of the press as a popular educator must here be mentioned as one of the important stimuli to crime under modern conditions. The excessive exploitation of crimes in the modern sensational press no doubt conduces to increase criminality in certain classes, for it has been demonstrated that crime is often a matter of suggestion or imitation. When 75 per cent of the space in our daily newspapers is taken up with reports of crime and immorality, as it is in some cases, it is not to be wondered at that the contagion of crime is sown broadcast in society.
(7) The influence of certain social institutions in producing crime must be mentioned. Here comes in especially the lack of opportunity for wholesome social amusements among our poorer classes, particularly in our large cities. Lacking these, the masses resort to the saloon, gambling-houses, cheap music and dance halls, and vulgar theatrical entertainments. The influence of all of these institutions is undoubtedly to spread the contagion of vice and crime among their patrons.
(8) The influence of manners and customs upon crime cannot be overlooked. The custom in certain communities, for example, of carrying concealed weapons undoubtedly has much to do with the swollen homicide statistics of the United States. Vicious and corrupting customs, such as compulsory social drinking, and the like, undoubtedly greatly influence crime. Even the luxury and extravagance of the rich might easily be shown to have a demoralizing effect, both upon the upper and the lower classes of society.
The list of causes of crime in the social environment might be indefinitely extended until the student would perhaps think that practically everything was a cause of crime in one way or another; and it is true that everything that depresses men in society is a cause of crime. However, if the student has gained an impression of the great complexity of the causes of crime, that is the main thing.