People on this thread are quick to blame “society” for his actions, which is fair. But I’d like to point out that social media is a huge part of society in the modern world.
Lemmy has a pattern of edgy people advocating for violence against their political and ideological opponents. That culture can radicalize people, and push already radicalized people over the edge, and when that happens it usually looks less like Luigi and more like this.
You just gotta ask yourself if this is behavior you want to encourage, deliberately or no.