Motorists in Dearborn report seeing a racial slur on a construction sign along I-94 overnight. The digital roadside sign displayed the message: "Trayvon A N***er", a reference to Trayvon Martin, the Florida teen who police say was gunned down by a neighborhood watch volunteer in February. "The portable sign has a panel that was broken in to," said MDOT spokesman Rob Morosi. "The message was changed and the keyboard was actually stolen."