Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lack of evidence ruins a potentially good book.

The cover notes for Mr. Case's book speak of new evidence gathered under the Freedom of Information Act. All this "evidence" consists of ominous letters and appraisals about the racial situation at Camp Van Dorn. Instead of a well documented history of a "known" tragedy at Van Dorn, the reader is treated to a novel. Equally lacking in both the "evidence" and the novel is the name of even one dead black soldier as a result of the massacre. Nor does Mr. Case document the authenticity of his sources, especially oral reports. That something occurred at Camp Van Dorn in 1943 is widely known. But only the cheapest of conspiracy theorists can hold that a lack of physical evidence is evidence of a conspiracy. Mr. Case fumbled the ball.