Anyone ever been around a spooked horse in a paddock or stall? Very dangerous for all concerned.
Brooks got "spooked" and caused the tragedy. With the exception of the Chauvin reel, about 98% of these chosen flashpoint, viral incidents feature this same basic problem: Lack of self-control by the unbroken colt or feral humans who apparently cannot live by the same basic rules as the rest of society and are a danger well beyond themselves.
They are "socially dangerous" to quote Carroll Quigley -- former Dean of Georgetown School of Foreign Service. Once again, Quigley is prophetic in his last chapter of 1966's "Tragedy and Hope" entitled "The Future in Perspective" :
"Most crucial have been the demands of the modern industrial and business system, because of advancing technology, for more highly trained manpower. Such training requires a degree of ambition, self-discipline, and future-preference that many persons lack or refuse to provide, with the result that a growing lowest social class of the social outcasts (the Lumpenproletariat) has reappeared. This group of rejects from our bourgeois industrial society provide one of our most intractable future problems, because they are gather in urban slums, have political influence, and are socially dangerous.
In the United States, where these people congregate in the largest cities and are often Negroes or Latin American, they are regarded as a racial or economic problem, but they are really an educational and social problem for which economic or racial solutions would help little. This group is most numerous in the more advanced industrial areas and now (in 1966) forms more than 20% of the American population. Since they are a self-perpetuating group and have many children, they are increasing in numbers faster than the rest of the population. Their self-perpetuating characteristic as a group is not based on biological differences but on sociological factors, chiefly on the fact that disorganized, undisciplined, present-preference parents living under chaotic economic and social conditions are most unlikely to train their children in the organized, disciplined, future-preference and orderly habits the modern economic system requires of its workers, so that the children, like their parents, grow up as unemployables. This is not a condition that can be cured by providing more jobs, even if the jobs are in the proper areas, because the jobs require characteristics these victims of anomie do not possess and are unlikely to acquire."