funny thing is, it was monarchists who did it

like officially we were a republic at the time, though there was still some monarchical stuff happening around the title of stadhouder.

long story short, the stadhouder position is abolished under Johan de Witt, Orangists mad, a little fucky wucky (the Rampjaar, Dutch for slight oopsie) happens, Orangists still mad, decide to murder and eat the brothers De Witt