They're the remnants of what was once known as Tulsa's Black Wall Street, before one of the worst race riots in U. Businesses that are still open in this north-side section that some locals are adamant about reviving — the off-brand gas-and-go stores, the thrift shops and salvage yards — are often separated from the next open place by gnarled weeds, rusted fence and vacant lots. Much of this — 35 square blocks of it — made up Black Wall Street, a southwestern Harlem of sorts and home to a middle and upper class of 9, African-Americans. Here, shop owners, doctors and entrepreneurs — some of them freed slaves looking for a new start in the recently incorporated oil boom town — thrived. In , over the course of roughly 16 hours, a race riot decimated the economic and cultural mecca.