[ObviousScience]

> I'm not sure if you're actually this dense or just trolling. What good can involving the police, after the fact, in a situation where nobody was harmed do?

People who do one reckless thing such as this demo are likely to do others. Calling the police about this incident means that they'll have a record of the people doing this, and if it becomes a pattern, handle it considerably harsher than an isolated incident.