[noduerme]

consider this alternative.

Split it into parts. Create a torrent file for each part. Get a private (home) server in the US and seed it, e.g. I have 1Gb upstream and would happily donate that to it 12 hours a day. Then come back to HN and other places with a website pointing to the torrent files, asking for more people to seed it. Also, ask seeders to store mirrors and put them wherever they can. 6Tb is not that much.

[sophacles]

If you do a plan like this OP, also share the torrent links and explanation to r/datahoarder - those folks are always talking about interesting datasets that they think are useful to seed. Many of them explicitly do so to theoretically fight against the sort of censorship you are actually facing, and would jump at the opportunity to help.