A San Diegoi police officer unholstered his gun because he was unable to decide if a camera or weapon is aimed at him by a cameraman. The frighetned photographer resisted to put  down the camera, but in the end the conflict ended without gunshot.
US sites mostly shared this story as an example for the restriction of photographers’ rights, abuse and police brutality. However it is also a very important to think about how you communicate with officials.