others. In order to use cases in this way, we had to find a way to put them in an aggregate context, to see where these particular incidents of violence might fit in a broader overall pattern, and to decide how the different kinds of violence that appeared in the cases might be related to one another.

It also is important to put these cases in the context of theoretical literatures that help sort different kinds of violence into different classes distinguished from one another in terms of their character, causes, and effective modes of prevention and control.

In this part of the report, we put the cases in context, first, by looking at where they fit in the aggregate patterns of violence that have beset the country, and, second, by seeing where they seem to fit in the academic literature on violence, and what that literature says about the causes and effective means of controlling such incidents.

Part II ends with the committee’s observations about potentially important strategies for preventing or controlling the violence and recommendations for future research. In offering these, we have stretched to the breaking point the evidentiary power of the sources at our command. We do so because we think the nation needs some considered observations about the nature of this problem, and that it cannot necessarily wait to get more information before it acts. Already, communities have begun to take steps to guard themselves from these incidents. Costs are being incurred; consequences—intended and unintended, good and bad—are beginning to accumulate. We therefore recommend an agenda for additional research, and that it be done quickly to ensure that the nation is better off a year from now, and five years from now, in terms of the ability to understand and control these events.



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