There will be dedicated relays for the purpose. nostr:nprofile1qqsggm4l0xs23qfjwnkfwf6fqcs66s3lz637gaxhl4nwd2vtle8rnfqprdmhxue69uhhg6r9vehhyetnwshxummnw3erztnrdakj7qfqwaehxw309ahx7um5wghx26tww4hxg7nhv9h856t89eehqctrv5hsz5xkmf runs relays for what is published to the forrest relay (in the kinds that #alexandria supports), but this is open source so you can spin up your own as anonymously as you can and thus you can publish anything at any time without much in the way of censorship.