Parler and gab just want to be mask-off racist twitter/facebook. Nothing anti-establishment there at all.
Pirate Bay and Silk Road were knowingly breaking the law in nearly every nation on earth and trying to avoid capture doing so, both failed to do so by various degrees. This is anti-establishment as they are flagrantly disobeying copyright and narcotics laws at these two sites.
Pirate Bay is still operational, just not by the original owner. I don’t know about Silk Road as I have no interest in drugs