Uncle Hugo's and Uncle Edgar's were legendary among the community of science fiction, fantasy, and mystery readers—and now they're gone. Venerable Minneapolis science fiction and fantasy bookstore Uncle Hugo’s and its sister store in the same building, Uncle Edgar’s, which specialized in mysteries, were both burned to ruins last Friday night by rioters. The store took its name from two major awards in the genre fields, science fiction’s Hugo awards, and mysteries Edgar’s. Independent bookstores are a threatened American institution, and Uncle Hugo’s was considered a flagship operation. Owner Don Blyly was noted for his ability to adapt to modern...