Human being have progressed significantly in both material and , however, we still live in a imperfect society where still have extremes of human behavior, such as violence, murder, terrorism, all of which not only menace people's life, but also threaten the stability of our society. I agree that the stability of a society largely depends on how it responds to the extremes of human behavior, but not all.
It is the society's undeniable duty to protect the people lived in it from all kinds of jeopardizes including the extremes of human behavior, which maybe ones of the most troublesome problems the society have to face. People's trust in society depends largely on whether it can provide a well-functioned and safe public environment.
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