RIP, I like you from the times I've had the good fortune of interacting with your characters, but I really have to disagree with what you're saying.
I appreciate the fact you wanted to participate meaningfully in this event, but Lower is pretty much set up as an area where there's constant bloodshed and violence. I was a little annoyed OOCly there wasn't a reset once the fun was over and we remained merchantless, but other than that, this has, just did, and will continue to happen as long as there is a Lower. Lower has been a place where watchmen and spellguard have been openly attacked and murdered for about a century, so if you have several generations of humans building that sort of hate and resentiment for one another, they are not exactly going to shed tears, let alone put their lives on the line, when some stuff starts happening.
People did actually try to stop them... they just weren't very successful. The group had prepared to take on anything so a couple of NPCs and scattered PC resistance wasn't going to cut the mustard. In a week or two, a couple of the team good PCs with equipment and levels will log on at once and end it (and if you're around and public about your beliefs, there's a good chance your Tormite can cut his teeth on them). Ultimately, life goes on.
The only aspect of this event that didn't pan out in a way I understood was, especially considering how random a lot of the violence started becoming, why some NPCs didn't start leaving the area if only in shout emotes or on the public notices board. If I was some freedom obsessed pauper I'd more than likely choose the Watch and Spellguard over that tyrant.
Ultimately, it's better that the event happened with little to no warning, because issuing a well intentioned idea like this (scheduling PC actions that have a large server impact) can have really negative reprocussions. We have to define, in some fashion, how meaningful the action must be in order to be called large. Besides, if these guys got beat up by the leveled and prepared PCs that could take them on, no one would have ever heard of this Montezzi character, we would have no villian, and there would be no awesome quest laid out to mace his brains out. Don't think of it like he's the king forever because nobody told you to log in, think of him like a really high level DM quest in the middle of Lower waiting to get his face axed in.
RIPnogarD
And while my lone character said stuff to them all I had backing me up were NPC guards, which kept these ROLL-players from killing me and racking up XP from my death also.
Yeah, the NPC guards are what keeps 50% (a literal percentage) of the PCs from mugging/killing you at any given opportunity. :)