Pyotr Zakharovich Ermakov, an incel and Russian Bolshevik revolutionary, was involved in orchestrating the execution of the Romanov family circa 1918. Allow me to quote the Wikipedia article written about the incident:
'"Prior to the killings, Ermakov had promised his Upper Isetsk companions that they would get to rape the women and kill the males, instructing them to wait in the forest with light carts for transporting the bodies. However, when Yurovsky's special detachment arrived, Ermakov's men were outraged to discover that they were already dead. Yurovsky maintained control of the situation with great difficulty, eventually getting Ermakov's men to shift some of the bodies from the truck onto the carts. While Yurovsky and his men were busy extricating the truck from the mud, Ermakov's men pawed the female bodies for valuables hidden in their undergarments, two of whom lifted up Alexandra's skirt and fingered her genitals. Yurovsky ordered them at gunpoint to back off, dismissing the two who had groped the tsarina's corpse and any others he had caught looting. Nonetheless, one of the men sniggered that he could "die in peace", having touched the "royal cunt."'
If you do not see an incel rebellion in this kind of political activity, you are lost.