I agree that people need to be informed and receive refresher training yo deal with all the complications of carrying a firearm.
I am sure many inexperienced gun owners have made innocent mistakes.
Taking a weapon out to show it off is one of the things one does not do anywhere. It only invites problems and, in some cases, legal problems.
Additionally, a dumb lack of judgement is not the same as a deliberate criminal act. Our prosecutors should be able to differentiate between criminal intentions and a mistake.
I do not know what this incident details will turn out to be, and there is not enough said. Still, it does not seem the gun owner had criminal intent or the desire to harm others.