Christ. I live in a complex and there are so many kids running around with cap/dart guns it's insane, police would have a carnival if they really wanted to.
I guess it's partially the person holding the cap/dart gun. (sort of)
If I was to dress in all camo and carry around a few cap guns with an older friend, we'd probably have the cops eventually called on us.
Where as young kids, it's not really cared about.
I think some adults frown very much at us 'big kids' with our toy guns, yet want their young kids to have the fun of cops and robbers the parents did way back when.
Damn confuzing if you ask me.