Please don't violate LW's ToS. Be aware of what you're posting publicly. This is not a bar with your friends. This is the internet where things are recorded forever and can possibly link back to you/us with consequences. It's not that hard to express yourself without breaking the rules.
Serinus is correct. They are rules to the benefit of everyone who wishes Lemmy.world to stay up which, since you're here, presumably includes you.
The server is in The Netherlands. The Netherlands does not have freedom of speech. Calling for violence is illegal there.
If mods left calls for violence up all the time, there's a good chance Lemmy.world could get shut down. Considering how much you participate here, I'm guessing you would not care for that.
Edit: Always love it when this explanation gets downvotes but the downvoters don't actually chime in and say that yeah, they'd be fine if Lemmy.world gets shut down as long as they get to say what they want, when they want, wherever they want. Maybe if you just admitted it instead of getting pissed off at someone pointing out that speech can have negative consequences...