Some of those ancient Greeks took the issue law-making seriously:

A Locrian, who proposed any new law, stood forth in the assembly of the people with a cord round his neck, and if the law was rejected, the innovator was instantly strangled.

(From Edward Gibbon, The Decline and Fall of the Roman Empire, Volume IV, Chapter XLIV : Idea Of The Roman Jurisprudence.)

via Ancient History Sourcebook: Edward Gibbon: The Idea of Roman Jurisprudence.