They actually taught us in school that toy guns are bad because we have this time once a year, where everyone dresses up and runs around with toy guns (no, not halloween). I remember having a teacher in class tell us that we should consider leaving the toy guns at home because it's not good to run around shooting toy guns at each other in public when there are other people doing shit that requires concentration.

At the time, it was all a load of bullshit and I'll wave my toygun into anyone's face! Toy guns are fun and make smoke!

I think this is a societal thing though. It's probably much easier to get some people to understand that toy guns might be bad.