the term blacklist

[LilimoLimomo]

Ironically, they were terms created to root out trolls.

[does a quick search]

The first published reference to blacklisting of an employee dates from 1774. This became a significant employment issue in American mining towns and company towns, where blacklisting could mean a complete loss of livelihood for workers who went on strike.

Ah, so the miners — who were famously mistreated and poorly compensated by their employers — that went on strike to push for improved working conditions were "being trolls"? That's certainly one way to interpret that situation.