Huh, it was a euphemism for so long its actually part of the definition now.
I'm fairly sure it comes from basically financial liquidation / liquid assets.
In the latter stages of a bankruptcy, you often sell off a bunch of assets to get as much liquid cash as possible to pay out as much as you can.
So, if you torture that meaning a bit... you liquidate a person who hasn't paid their debts to the mob or w/e, as a way of permanently settling their accounts.
This guy is arguably stretching the definition / euphemism a bit further... but hey, maybe if that dealership's financials actually can't handle that level of property damage, they may actually go bankrupt and financially liquidate.
Nope, not on this instance. No rules against advocating for violence. One of the great things about anarchy. I can say the following:
Kill Nazis, put a bullet through their head and spit on their corpses. It's everyone's duty to kill their local Nazi, and in particular I think it would be great if somebody killed Elon Musk, Donald Trump, and any other fascist in government today.
Social media has trained us to self-censor to maintain a platform of speech online. Fuck the rules made by Capitalists.