On Morning Joe, Mike Barnicle reacts to news of Officer Eric Casebolt’s resignation from the McKinney Police Department after being widely criticized for his handling of teens at a pool party in Texas. “The shocking aspect of the video is when the officer takes his gun out when approached by another teenager who is clearly concerned about the treatment of the young woman on the ground. He takes his gun out? Go home!,” says Mike. Watch the rest of the conversation here. On MSNBC.