The original post by @spujb@lemmy.cafe was a woman wearing a shirt that says "Italians do it better". Someone asked what they do, and drag explained the joke as best as drag understood the intention, though drag disagrees that Luigi killed that CEO. It's not a call for violence, it's an explanation of a joke. Other people interpreted the joke the same way.
Less than an hour later, Flying Squid banned drag for that explanation, and for saying Luigi is not guilty. According to Flying Squid, referencing the CEO shooter case and saying Luigi didn't do it is a call for violence. Expressing support for Luigi Mangione is a bannable offense on LemmyShitpost.
EDIT: The Picard Maneuver responded to drag's appeal and reversed the ban. Drag will be deleting this post as it is no longer relevant to the current state of affairs on Lemmy Shitpost.
While I'm personally inclined to agree with drag that that was quite clearly answering a question and not an imperative, I also don't think that it should be frowned on to protect the instance one moderates from potentially being taken down.
Lemmy is still (relatively) small enough that it can fly under the radar, but that's not going to last forever.
Well, maybe someone who reads the context on comments could take over protecting the instance and give Squid a break. He mods so many communities, it's clear he's overworked.