Live trash can
Warlord
The tribe: the intellectual and enlightened elite of France and the US.
But if I consider the thunderous reaction in 1790 of the British Conservative Edmund Burke on the French declaration of 1789: "We are not the converts of Rousseau"
and if you talk about emerging before actual texts..... one could very well say that it emerged in France.
You might just be right!
I had located it to the French revolution and the American independence war and the civil war. Or something. But I believe these were precursors.
I believe it appeared fully fledged first after the second world war.