Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mongo's debacle

I've been a big fan of the series since the beginning, and from Book #1 to this one---this is plainly the worst. Chesbro goes off on some tirade to validate his political views and spends much of the book having fun yanking the right wing's chain. Inadvertently, in his book they are right actually---the KGB really has infiltrated the country. Whether you're right or left, this mindless claptrap gets in the way of the story, and is a bizarre diversion that often makes no sense. As the series progresses, the Mongo-isms are reduced. The quirky books with a dwarf detective dabbling in the supernatural become standardized and they become routine. This is the series' nadir, though, lacking in charm, filled with irrelevant tirades. I'm working my way through the newer ones now--hope this isn't a sign of what is to come.