Now and then there are outbreaks of savage violence on the part of young lads in the streets; acts which, apparently purposeless and certainly cruel, shock the citizens and anger them. Then there is a cry for vengeance; never an attempt to seek the causes of the trouble; and the matter is forgotten when a few of the offenders have been given "exemplary punishments." Exemplary punishments always repay examination, and sometimes the hapless individual who is made the whipping-boy for others has been rather cruelly treated; not that that seems to matter if the offence complained of ceases, for it is taken as proof that the authorities have done the right thing in making an example of him. The assumption is one that never bore examination at any time, but it seldom is examined.
When a crop of offences of a similar kind startles a district there may be a common cause found if it is sought for; and when the offences cease their cessation may be found to have some relation to that cause; but the arrest and imprisonment of one here and there as examples have as little relationship to the cessation of offences as prayer had in the stopping of an epidemic of cholera. In the one case you have to break up the association of offenders and destroy their spirit; in the other you have to attend to your drains and your sanitation. The punishment and the prayer in either case may assist in so far as they direct attention to the need for right action. How then do these outbreaks originate, and what causes them to cease? In the first place, they are not the work of professional thieves, though these take advantage of them. They begin in horseplay among the lads at the street corner. None of them may be abnormally mischievous or wicked, but a crowd has a spirit of its own which is different from that of its members. Everybody has seen dignified citizens under the excitement of, say, an election, when they got the news that the country had been saved in the way they desired, behaving in a sufficiently ridiculous manner and inciting others to a like behaviour. If they had received the news when at home it would at most have caused a smile, but in a crowd one has stirred the other to do and say things that neither would ordinarily do or say.