Basically it works like this:

Instances A, B, and C are federated initially. When a user posts on Instance A, users on Instances B & C can see and interact with the post directly. Any comments they make will be sent back to Instance A as the "home" instance for that content.

Now let's say Instance A decides they don't care for the type of interaction they're getting from Instance C's users and decides to block - or defederate - Instance C.

To users on instance A, nothing changes other than new posts and comments from users on Instance C will no longer show up. To users on Instance B, nothing changes other than new comments from users on Instance C won't appear in posts they interact with on Instance A. However, for Instance C, things are suddenly branched.

On Instance C, any posts that were created prior to defederation still exist in Instance C's record. However, any comments that users on Instance C commit to those posts will no longer be distributed to users on Instances A or B, because Instance A maintains the "primary" record of the post. Similarly, Instance C's users will not receive updated comments from users on Instance A OR Instance B, because again, Instance A is what determines which comments appear in federated instances. Furthermore, new posts created on Instance A will no longer show up in users' feeds on Instance C. From the moment of defederation, Instance C's copies of all posts on Instance A are now distinct, and the only new comments or updates they will receive will be from local users on Instance C.

This tool has been made by Kiwi Farms.

I haven't looked at that instance but can corroborate that there are two very different groups called skinheads who's philosophy's are entirely incompatible with one another so it is always important to clear up which one you're dealing with.

It looks like the "S" key on your keyboard is broken.

I don’t mean to repost a comment, but I’m looking for context. Are skinheads common in Germany? They seem to have a fascination with German culture over there.

First, because some instance's block list indicates unwillingness to see anything beyond their little world.

Second, because in some (only only some) blocklists, there are links to some actual shitty people who I wouldn't think actually have the capacity to run a server.

In the last few days there's been quite a fuss about some instances storing insulting jokes and whatnot, but maaaan that's honestly nothing compared to what else is out there.

Is this referring to kbin.social, or do all kbin instances work this way?