This cop answered a call about a disabled person then shocked everyone by assaulting an elderly veteran who had just welcomed him to the door. >> Would you mind stepping out and talk to me? >> Yes, sir. >> Got a call on you. >> Well, I'll talk to you outside. >> Give me some space. I was told you're hitting people. >> [music] >> It is not me. I'm the post commander here. >> Sir, please come over here and come talk to us, please. >> You better relax. >> Ronnie, get back. Ronnie, get back. >> Do not do that. >> Step back. >> Put your hands behind your back. >> Get on the ground. >> Get on the ground. >> Please, it is not me. >> Back up. He's okay. We're not hurting him. >> Yes, you are. >> So, this guy's not him. >> Tell me what's wrong. >> I'm the one that called. >> It's the guy in the purple shirt. >> When I said get back and you refused to get back, I'm not going to play this game. >> He chose not to play along and the internal affairs investigation eventually showed him the door. No authority without accountability.