schmonz.com is a Fediverse instance that uses the ActivityPub protocol. In other words, users at this host can communicate with people that use software like Mastodon, Pleroma, Friendica, etc. all around the world.
This server runs the snac software and there is no automatic sign-up process.
I regularly enjoy FrontBurner, the CBC podcast. This episode on "What exactly is Antifa" is a good explainer and touches on what is going on in the US and if it is fascism.
https://www.cbc.ca/radio/frontburner/what-exactly-is-antifa-1.7652739