What is Coup D'etat?
1.
The overthrow of the current establishment, by dissidents within the government.
Dude 1: "Did you guys hear that General Pinochet died?"
Female: "Didn't he start the coup d'état back in the 70s?"
Dude 2: "Yeah, I'm not sorry that guy is dead, had my uncle killed."
Dude 1: "Fuck your communist tree loving fag uncle."
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2.
Overthrow of the government. Anarchy
1. When Napoleon and two directors took over the French Government, that was a coup d'etat.
3.
a) when militia storm the government HQ and cease control of a country.
b) When a government is discredited by its' actions enough for them to be forced by thier people to hand over power, since no-one is listening to them
b) The house-arrest of Mikhail Gorbachev was ended by Boris Yeltsins' coup d'etat in which he campaigned against the USSR government of which he was a member with the people on his side and the military disobeying thier oders to prevent the people, thus securing the military on his side.
See