They desired a republic, which was an entirely new government system, so there was a new cause for which people were fighting.
The Jacobins were left-wing revolutionaries who sought to end King Louis XVI's reign and establish a French republic with popular political authority. The Jacobins were the most well-known and radical political faction to emerge from the French Revolution.
The upheaval was caused by disdain for the French aristocracy and King Louis XVI's economic policies, both of which were executed by guillotine.
The Jacobins saw themselves as constitutionalists, committed to the Declaration of the Rights of Man and, in particular, to the principle of "preservation of the natural rights of liberty, property, security, and resistance to oppression" enshrined in the Declaration.
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