Missouri has an open carry law for guns. Someone decided to test it out.
At a Walmart grocery in Springfield. Dmitriy Andreychenko put on a body armor and picked
up his rifle along with a hundred rounds of ammunition and put a handgun
in his belt. Then he got a shopping cart and started walking around
Walmart market while recording himself on a cellphone.No shots are fired yet mass panic ensues. People start running away. An employee pulls the fire alarm. Everyone exits. An off duty firefighter holds Dmitriy at gunpointuntil police come to collect him.
https://www.ky3.com/content/news/Suspect-told-his-sister-he-wanted-to-conduct-a-social-experiment-530944771.html
And this experiment reveals the major flaw in open carry. How do you
determine intent.