They are doing the same to many other platforms.
Sign this petition:
If you are in the UK sign this petition:
https://petition.parliament.uk/petitions/722903
(This one isn't directly related to the VISA situation but the online safety act is causing similar censorship for UK residents)
If you are in the US write to your congressman and senator about these bills:
https://www.congress.gov/bill/119th-congress/senate-bill/401/text#id69c89f8d43a5482d9b094129209d229e
https://www.congress.gov/bill/119th-congress/house-bill/987/text
If anyone has relevant info for other countries add a link to the comments and I'll append them to the OP too.