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Chat and file transfer over tor impossible for your work to spy on. Spread to as many as possible.
(www.ricochetrefresh.net)
Community for union related stuff, with focus on the IWW.
A good telegram group to join (I do not own it, I don't take responsibility for what you'll find there): https://t.me/AnarchoSyndicat
And int he spirit of open source:
https://matrix.to/#/%23anarchycommunism:matrix.org
If you are using a company device, assume they are taking screenshots every second.