The first reliably dated event in 
Athenian history, the 
Cylonian affair was an attempted coup in 
632 BC by the prominent Athenian 
Cylon.  Cylon and his group attempted to seize power but were opposed.  They took refuge in 
Athena's temple and, according to 
Plutarch, were persuaded by other prominent Athenians to leave the temple and stand trial.  In an effort to ensure their safety, the accused tied a rope to the temple's statue and went to trial.  Alas, on the way the rope (again, according to Plutarch) broke of its own accord.  The Athenians took this as the goddess' repudiation of her suppliants and proceeded to stone them.
Not to be confused with the Cylons[?], fictional robots in the TV series Battlestar Galactica.
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