A tangle with a cop and an achy heartBy Jeri Rowe Staff writer Tuesday, Apr. 1, 2008 3:00 am GREENSBORO — Alexander Kohanowich is a patriotic guy. His six grandchildren call him Pop. For at least five years, Pop has traveled around our city, showing his support for American troops overseas. He doesn't say much. He just holds his signs at busy intersections and busy events to get people's attention. Maybe you've seen him. He'll hang, say, on Westover Terrace, near Wendover. He'll face east in the morning, west in the afternoon, so drivers can see his signs clearly, without...