I hope that this sends a message to police that we still have the right to carry openly. It will be interesting to see how far this case goes. Even the 911 call reveals that they were "peaceful" and not doing anything that could be construed as threatening or disturbing the peace.
Secondly, if anyone open carries, you need to be willing to go to jail or court to defend your right to open carry. If you are not willing to accept this possibility, then don't open carry.