Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Swift Boat Veterans

I just canceled my two-book order, one of which was "Unfit For Command". The reason I did so was because you changed your review policy just for this book. As best as I can tell you didn't change your policy for any of the multitude of Bush-bashing books.It is transparent that you don't want "Unfit For Command" to harm Kerry's chances at the White House in November. This was the first time I had placed an order with Amazon.com and it will be the last experience with you.By-the-way, in you review guidelines the first one in the list is "Spoilers! Please don't reveal crucial plot elements". Well, I hate to be a spoiler, but at the end of the book President Bush wins and Kerry continues to be a liberal loser.