ATLANTA — A roadway in Atlanta serves as a concrete reminder to drivers, joggers and neighbors that Georgia once took up arms against the United States of America.It's called Confederate Avenue.Running 1.4 miles from the leafy edges of gentrified Grant Park to the gritty bustle of Moreland Avenue, its name once got little notice. But now, amid a national re-examination of Confederate symbols, it's a trigger for debate and a likely target for a new name.In the summer of 2015, after white supremacist Dylann Roof killed nine black worshippers at a church in Charleston, South Carolina, Confederate symbols became the focus of fierce contention. On social media, Roof had been pictured with a Confederate battle flag.Following a white nationalist rally in Charlottesville, Virginia, where a woman was killed in August, an Atlanta resident began a name-change petition drive for the road.