A number of governments (France, Germany, Switzerland, Netherlands), international organisations (The European Union, The Council of Europe, W3C etc), public broadcasters (ZDF, the BBC, PBS/NPR affiliates etc) have set up servers or accounts on the Fediverse.
Please ask public services in your country/region/area to follow their lead. I can do a shoutout on @FediFollows to help get them started.
Musk's Twitter hides all its accounts behind a sign-in page, so it's no longer a public channel.
p.s. This doesn't have to be just top level public organisations. It can be any level, including grassroots. For example there's a public library in Illinois, USA at @VernonLibrary, it could be things like that.