Lunch counters seem like a quaint piece of early 20th century Americana, and I have long loved them for that. But as with so much of the iconography of Americana, the ugly shadow of racism has tainted our memory of lunch counters and their place in the culture. And when I say lunch counters, I’m really thinking about one lunch counter in particular: the one that once stood in the Woolworth store in Greensboro, North Carolina.