It was in Louisiana, there are vaguely similar cases from few years ago, which is making it harder to find the one I'm referring to. This one was from the 80s.

Nevermind I found it:

https://casetext.com/case/landry-v-ascension-parish-school-bd#:~:text=In%20Landry%20v.%20Ascension%20Parish%20School%20Board%2C%20415,of%20a%20teacher%20on%20a%20finding%20of%20incompetency

Both teacher and student were originally convicted of aggrivated assault, teacher was eventually acquitted by the state supreme court.

Similar cases happen somewhat frequently. Without context, all of a sudden having a gun appear can make you look like the aggressor. It's a very nuanced topic, although that's probably for a good reason.

Depending on the jurisdiction, other evidence like cameras, and disparity between you and the aggressor, you might just be able to whip it out like a rapper with "lil" in thier name.

Conversely, someone seeing the corner of it when you reach up to grab something from the top shelf at the grocery store might get you arrested and stripped of your ability to carry.

I know there must be some kind of language that would work there, but I'm really not sure what is it would be. "We won't take this lying down" or "It will be better for you if this ends peacefully" sound good to me, but might not to a jury.