shannon: tense moments on the campaign trail involving another presidential campaign. like tobin is in south bend looking at the difficulties facing pete buttigieg when it comes to the african-american vote. >> why are we talking about people? >> reporter: and attempt by supporters of pete buttigieg in south bend to connect with african-american voters went off the rails. >> african-americans who know me best our best to speak to who i am. >> reporter: the event mirrors townhall from last june. >> get the races off the street. >> a white police officer shot and killed eric logan who police say refused to drop a knife. >> henry davis junior was his opponent in the mayoral primary. >> why isn't it connected to that? i don't think he cares about african american voters.