Confederate battle flag fliers posted at American University

There are a lot of Confederate flags around Ohio and I always wonder why. Ohio was a union state, an important underground railroad state. One state neighbor to our south was literally created by seceding from the rest of its state in order to NOT be part of the confederacy, and the other was neutral though part of the union. We are surrounded by union states.

Whose heritage is being celebrated with confederate flags flown in Ohio???