A mystery of the digital censorship era is the ease with which its core ideas have been sold to people who were its fiercest initial opponents. The closer you look at mechanisms now used to isolate, remove, disrupt, and spy on everyone from environmentalists to antiwar activists to anti-mandate or anti-lockdown protesters, the more easily you’ll see a direct line to high-profile civil liberties controversies of two decades ago. The modern Internet surveillance state was born in programs bitterly opposed then by left-leaning intellectuals, of the type who subscribed to The Nation and carried NO BLOOD FOR OIL signs while protesting war in Iraq.