This gonna be pretty important in the next years... people, if you plan on printing protest flyers and pamphlets, either get them done in a professional print shop (if you know someone you can trust, that is), or at the very least buy the printer in cash, never ever connect it to the Internet, and only connect it via USB to a Linux computer - macOS and Windows both will install printer drivers automatically that might phone back to the mothership and link your printer ID to some sort of identifier.
Get a silkscreen kit if you really care that much. Also allows you to print T-Shirts.
Wouldn't it be way easier to just track the people handing out the flyers?
Or, you know, just print massive quantities of valid but randomized tracking dots all over the document using a printer you bought with cash?
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For reference how this was done in the totalitarian countries of the eastern block: https://en.m.wikipedia.org/wiki/Samizdat