Why do laws exist?
What happens if someone violates the law?
Who makes the law?
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Why do laws exist? Because, to paraphrase Voltaire, it was necessary to invent them. According to Tom Head, author of 'Civil Liberties: A Beginner's Guide', laws exist to protect citizens from harm (from others and from themselves), to encourage or discourage certain behavior by citizenry, and to protect the State from harm. A detailed discussion of these principles can be found at this link:
What happens if someone violates the law? When such violation is ...
The solution provides a discussion taking up the questions listed in original problem (see long description) in relation to the nature of law - its origins, its relation to fairness and justice as well as implementation of the law in relation to violations.