breaking any laws
'brandishing a weapon' and the like is a criminal offense
Yea, but unless some sort of incident happens, I don't think they should give them any grief. I'm not even sure if the weapons in question are real. They could be foam or plastic.. and if not, as long as it isn't a gun, is it really a criminal offense to walk around with a machete or some other odd makeshift weapon as long as your not like chasing people or showing malicious intent?
Edit: And I mean like walking down the street.. not like around a school, government building, or post office.