An example is pirate sites or underground drug sites. Those are largely blacklisted -- and fit into a (far) left-leaning philosophy around a class of freedom. I'd argue most of those are less extreme than Parler.
> When you endeavor to kill an organization, are you not in a sense declaring war on them?
Isn't that what Trump wanted to do with the NFL after Kaep took a knee?
> Further, was this action not designed to frighten others into getting in line with the ruling party, lest they suffer the same fate?
Sure, in the same way that death penalty is meant to scare murderers.
You're trying to make this out to be a site of critical thinkers espousing different views that are being trampled on, while most everyone else recognizes it more like a revenge porn site.