You may or may not want to be part of the "movement" to normalize the open carrying of handguns for lawful self defernse but you are each and every time you do carry openly.
Unless folks think that Santa has joined the force as an undercover cop there is no way anybody is going to think I'm on the force. Yes, sometimes I use humor and tell folks that I need to protect all the toys from the bad people, but most of the time I'd rather bore them with an explanation of how my being old and physically handicapped makes me vulnerable. When I get asked just how many times I've been mugged I smile and ask them how many muggers they think are willing to take a chance against an old guy with a gun? They slowly smile as understanding washes over them like the incoming tide.