HIGHLAND PARK, Mich. A family put out a public plea for help catching a killer. They said 67-year-old Jerry Black was just out for a walk when he was murdered. The person that did this is a coward.Police said Jerry Black was walking around his neighborhood, near Hamilton and West McNichols in Highland Park, when he was killed. Police said this is the second homicide in Highland Park in 2020. If you know anything about what happened to Jerry Black, call Highland Park Police Department.