what’s the line between brigading and just getting into political arguments though?

What is the similarity?

Brigading is when you are targeting your entire group to a single post and attack users or disrupt the discussion.

Ohh okay. I didn’t know the context but that sounds really bad. Brigading instances should be de-federated.

I can sort of understand why tbf. Just playing the devil’s advocate here but the issue is that today it’s fine and shitposts are shitposts but Poe’s law will come into action at some point.