I live in Dearborn, and Greenfield Village and the Henry Ford Museum are just a mile from my home.
It's as safe as any place in Michigan, and there are lots of things to see at the Village and the Museum. The Village has seen some real good improvements in the last five years, and the Museum has a great industrial history area, and the cars are worth the visit. They also have a great firearms collection, especially an original Walker Colt.
While your here, have a meal at BD's Mongolian Barbecue, and if you have time, go the Miller's Bar on Michigan Avenue. They have one of the best burgers in the state. Miller's, despite its name, is a great family place.