Workplace violence seems to be an unfortunate but recurring part of modern life. At the least, it can be two angry coworkers slugging it out. At the worst, it can be a mass shooting murder like the incident Monday at the Washington Navy Yard. This guest is a former police commissioner who specializes in workplace violence. While he says you can’t stop crazy, you can protect yourself, your employees and your visitors. Bo Mitchell has some do’s and don’ts.