From the guy's comments during the video he and/or his family has some kind of history with the local PD. There's more to this story than just this video snippet. I'm not a cop so I can't say if unholstering his weapon was proper, though I suspect it wasn't. I don't get why the guy didn't just take his hand out of his pocket. It seemed like a reasonable request, especially when the cop has a gun drawn. At this point comply to prevent getting shot. It's almost as if the guy was daring the cop to escalate. Not a game I am willing to play. Comply so you can live to have your day in court.